CN102659166A - Method for preparing CuO/Cu2O block composite material with room-temperature ferromagnetism - Google Patents
Method for preparing CuO/Cu2O block composite material with room-temperature ferromagnetism Download PDFInfo
- Publication number
- CN102659166A CN102659166A CN201210157576XA CN201210157576A CN102659166A CN 102659166 A CN102659166 A CN 102659166A CN 201210157576X A CN201210157576X A CN 201210157576XA CN 201210157576 A CN201210157576 A CN 201210157576A CN 102659166 A CN102659166 A CN 102659166A
- Authority
- CN
- China
- Prior art keywords
- cuo
- room
- cu2o
- temperature
- composite material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a method for preparing a CuO/Cu2O block composite material with room-temperature ferromagnetism. The method comprises the following specific preparation processes of: A-, paving a high-purity CuO (99.99 percent) powder in a clean quartz boat; B-, putting the quartz boat in a tube furnace; heating along with the furnace to 950 DEG C; then, performing heat preservation for 0-8 hours under the atmosphere of 950 DEG C; and then, rapidly taking out the quartz boat or cooling along with the furnace to obtain the CuO/Cu2O block composite material with the room-temperature ferromagnetism. According to the method disclosed by the invention, the CuO/Cu2O block composite material with the room-temperature ferromagnetism is prepared by utilizing a high-temperature sintering CuO powder. The invention relates to a method of obtaining the intrinsic room-temperature ferromagnetism (the CuO/Cu2O block material is paramagnetic) by utilizing CuO and Cu2O in a nonmagnetic substance CuO/Cu2O block composite material. The method for preparing the CuO/Cu2O block composite material with the room-temperature ferromagnetism has the advantages that the required equipment (tube furnace) is simple; the raw materials are low in cost; the process is simple and easy to implement; the cost is low; the reaction condition is controllable; products and a byproduct (oxygen) are environmental-friendly; and the product yield is high.
Description
Technical field
The invention belongs to technical field of electronic materials, specifically is a kind of room-temperature ferromagnetic CuO/Cu that has
2The preparation method of O block matrix material.
Background technology
Along with the develop rapidly of electronics technology and electronic industry, the investigator just is being devoted in the conventional electrical device, to introduce electron spinning at present, thereby make electronic spin is applied to storage, transmission, handles quantum information and become possibility.In to spin electric device performance history of new generation, dilute magnetic semiconductor is owing to having magnetic and semi-conductive characteristic concurrently, being easy to be considered to the next generation and utilize the electronic spin degree of freedom to process the main raw of microelectronic device with conventional semiconductor technology is compatible.In recent years, domestic and international research person has observed tangible room-temperature ferromagnetic in transient metal doped oxide system, and this makes the actual application prospect of dilute magnetic semiconductor device become optimistic.But up to the present in view of in these dilute magnetic semiconductor systems that have been found that, existing group bunch, magnetic second phase, current carrier and the defective comprise the doped magnetic element to induce multiple possible magnetic sources such as ferromegnetism; Make for the verifying and its ferromagnetic control is all become unusual complicated of these dilute magnetic semiconductor magnetic sources, thereby greatly influenced the practical application of material.
2004, people such as Coey had been adulterated HfO first
2Found in the film that Tc is higher than the ferrimagnetism of room temperature and has proposed
d 0(electronic configuration of this type of material is generally
d 0Or
d 10) ferromagnetic notion (M. Venkatesan, C. B. Fitzgerald, J. M. D. Coey.
Nature 430,630 (2004); J. M. D. Coey, M. Venkatesan, C. B. Fitzgerald,
Nat. Mater. 4, 173 (2005) .): as if he points out that when magnetic-doped concentration goes to zero the specific magnetising moment that experiment provides is also non-vanishing, has a kind of magnetic moment relevant with defective to be activated by magnetic impurity in the sample.Subsequently, the researchist is in succession at pure ZnO, TiO
2, SnO
2, In
2O
3, Al
2O
3, also observed tangible room temperature ferromagnetic phenomenon in the system such as CuO, MgO.
d 0Ferromagnetic occurred overturning before investigator's viewpoint; Make to utilize magnetic element to mix to obtain dilute magnetic semiconductor and become inessential means; Owing to avoided the use of magnetic element, roll into a ball bunch a interference simultaneously to sample magnetic source thereby got rid of by magnetic second phase or magnetic particle.Cu and oxide compound thereof (CuO and Cu
2O) at room temperature all be the paramagnetic characteristic, so thereby Cu has been used for doped oxide semiconductors in a large number as a kind of non magnetic ion realizes coupling (T. S. Herng, D. C. Qi, the T. Berlijn of the ferromagnetic and characteristic of semiconductor of room temperature; J. B. Yi, K. S. Yang, Y. Dai, Y. P. Feng; I. Santoso, C. H. Sanchez, X. Y. Gao, A. T. S. Wee; W. Ku, J. Ding, and A. Rusydi
Physical Review Letters, 105,207201 (2010) .) and ferroelectric-ferromagnetic coupling (T.S. Herng, M.F. Wong, D.C. Qi, J.B. Yi, A; Kumar, A. Huang, F.C. Kartawidjaja, S. Smadici, P. Abbamonte; C. Sanchez-Hanke, S. Shannigrahi, J.M. Xue, J. Wang, Y.P. Feng; A. Rusydi, K.Y. Zeng, J. Ding
Advanced Materials, 23,1635 (2011)) research.At present people with collosol and gel and Hydrothermal Preparation CuO/Cu
2O matrix material, but the CuO/Cu of this method preparation
2The O matrix material does not all have room-temperature ferromagnetic.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation and has room-temperature ferromagnetic CuO/Cu
2The preparation method of O block matrix material.
Adopt following technical scheme for solving technical problem of the present invention:
A kind of have a room-temperature ferromagnetic CuO/Cu
2The preparation method of O block matrix material, concrete preparation technology is following:
A, high-purity CuO (99.99%) powder is tiled in the clean quartz boat;
B, quartz boat is put into tube furnace, be warming up to 950 degrees centigrade,, after 0-8 hour quartz boat is taken out or furnace cooling fast in insulation under 950 degrees centigrade of air atmosphere then, obtain having the CuO/Cu of room-temperature ferromagnetic with stove
2O block matrix material.
The temperature rise rate of said tube furnace is 10 degrees celsius/minute.
The present invention utilizes high temperature sintering CuO powder to prepare to have room-temperature ferromagnetic CuO/Cu
2O block matrix material is a kind of non-magnetic substance CuO/Cu that utilizes
2Obtain room-temperature ferromagnetic (CuO and the Cu of intrinsic in the O block matrix material
2The block materials of O is the paramagnetic characteristic) method.Because its presoma CuO and last sintered product Cu
2O at room temperature is the paramagnetic characteristic; This preparing method's condition is a high temperature sintering simultaneously; And all samples all have the experiment condition that except that sintering time, is equal to; So we can get rid of sample owing to the preparation process receives ferromagnetic pollution, thereby obtain the attribute of sample intrinsic, regulate CuO and Cu in the matrix material through the change of sintering time
2The ratio of O, the saturation magnetization of sample reduces with first the increase afterwards of the increase of sintering time, and the sample of sintering after 2 hours has maximum saturation magnetization 0.04 emu/g.This invention is that the development and the application of spintronics device provides material foundation, at spin fet, has the potential commercial application prospect in the spin resonance tunnelling device isospin electron device.The equipment that the present invention requires simple (tube furnace), low in raw material cost, simple for process, cost is low, and reaction conditions is controlled, product and by product (oxygen) environmentally safe, product production is big.
Description of drawings
Fig. 1 is the thermogravimetric hot-fluid analysis of high-purity CuO powder.
Fig. 2 is 0 hour, 1.5 hours, 2 hours, 4 hours, 6 hours, 8 hours following CuO/Cu for sintering time
2The X ray diffracting spectrum of O block matrix material.
Fig. 3 (a) is 0 hour, 1.5 hours, 2 hours, 4 hours, 6 hours, 8 hours following CuO/Cu for sintering time
2The room temperature mangneto loop line of O block matrix material, 3 (b) are 0 hour, 1.5 hours, 2 hours, 4 hours, 6 hours, 8 hours following CuO/Cu for sintering time
2The saturation magnetization of O block matrix material is with the variation relation of sintering time.
Fig. 4 is 2 hours CuO/Cu for sintering time
2The null field of O block matrix material with a cooling curve arranged.
Fig. 5 is 2 hours CuO/Cu for sintering time
2The ESEM picture of O block matrix material.
Embodiment
Embodiment 1
High-purity CuO (99.99%) powder of 1 gram is tiled in the clean quartz boat and puts into tube furnace; The tube furnace temperature begins to rise with the speed of 10 degrees celsius/minute from room temperature; When temperature arrives 950 degrees centigrade, quartz boat is taken out fast, obtain sample CuO (0h) after the cooling.
Utilize the structure of X-ray diffractometer assay products, as shown in Figure 2, the result shows that product is pure monocline CuO structure, does not observe other dephasigns.The Magnetic Measurement result shows that sample at room temperature is paramagnetic characteristic (shown in Figure 3).
High-purity CuO (99.99%) powder of 1 gram is tiled in the clean quartz boat and puts into tube furnace; The tube furnace temperature begins to begin to rise with the speed of 10 degrees celsius/minute from room temperature; Insulation is taken out quartz boat after 1.5 hours fast after temperature arrives 950 degrees centigrade, obtains CuO/Cu after the cooling
2O block matrix material.
Utilize the structure of X-ray diffractometer assay products, as shown in Figure 2, the result shows that product is CuO and Cu
2The matrix material of O, along with the increase of sintering time, the diffraction peak of CuO phase weakens gradually, and Cu
2The diffraction peak of O phase strengthens gradually.The Magnetic Measurement result shows 1.5 hours CuO/Cu of sintering
2The O matrix material has tangible room-temperature ferromagnetic, and its saturation magnetization is 0.02 emu/g.
Embodiment 3
Respectively high-purity CuO (99.99%) powder of 1 gram is tiled in the clean quartz boat and puts into tube furnace; The tube furnace temperature begins to begin to rise with the speed of 10 degrees celsius/minute from room temperature; Insulation is taken out quartz boat after 2 hours fast after temperature arrives 950 degrees centigrade, obtains CuO/Cu after the cooling
2O block matrix material.
Utilize the structure of X-ray diffractometer assay products, as shown in Figure 2, the result shows that product is CuO and Cu
2The matrix material of O, along with the increase of sintering time, the diffraction peak of CuO phase weakens gradually, and Cu
2The diffraction peak of O phase strengthens gradually.The Magnetic Measurement result shows 2 hours CuO/Cu of sintering
2The O matrix material has maximum saturation magnetization 0.04 emu/g.Utilize SQID that the cold property of this sample is studied.Shown in Figure 4 is the null field and the extra show cooling curve of sample, and interior (2～330 K) two curves of TR that the result is presented at test never intersect, and this shows this CuO/Cu
2The Tc of O matrix material is higher than 330 K at least, simultaneously, is that the center has a bag that makes progress with 220 K on the null field cooling curve of sample, and it is corresponding to the Ne&1&el temperature of block CuO.Adopt the pattern of scanning electron microscopic observation sample, 2 hours CuO/Cu of sintering as shown in Figure 5
2The particle size of O matrix material shows that it is the block matrix material between 7～10 microns.
High-purity CuO (99.99%) powder of 1 gram is tiled in the clean quartz boat and puts into tube furnace; The tube furnace temperature begins to begin to rise with the speed of 10 degrees celsius/minute from room temperature; Insulation is taken out quartz boat after 4 hours fast after temperature arrives 950 degrees centigrade, obtains CuO/Cu after the cooling
2O block matrix material.
Utilize the structure of X-ray diffractometer assay products, as shown in Figure 2, the result shows that product is CuO and Cu
2The matrix material of O, along with the increase of sintering time, the diffraction peak of CuO phase weakens gradually, and Cu
2The diffraction peak of O phase strengthens gradually.The Magnetic Measurement result shows 4 hours CuO/Cu of sintering
2The O matrix material has tangible room-temperature ferromagnetic, and its saturation magnetization is 0.009emu/g.
Embodiment 5
High-purity CuO (99.99%) powder of 1 gram is tiled in the clean quartz boat and puts into tube furnace; The tube furnace temperature begins to begin to rise with the speed of 10 degrees celsius/minute from room temperature; Insulation is taken out quartz boat after 6 hours fast after temperature arrives 950 degrees centigrade, obtains CuO/Cu after the cooling
2O block matrix material.
Utilize the structure of X-ray diffractometer assay products, as shown in Figure 2, the result shows that product is CuO and Cu
2The matrix material of O, along with the increase of sintering time, the diffraction peak of CuO phase weakens gradually, and Cu
2The diffraction peak of O phase strengthens gradually.The Magnetic Measurement result shows 6 hours CuO/Cu of sintering
2The O matrix material has tangible room-temperature ferromagnetic, and its saturation magnetization is 0.003 emu/g.
High-purity CuO (99.99%) powder of 1 gram is tiled in the clean quartz boat and puts into tube furnace; The tube furnace temperature begins to begin to rise with the speed of 10 degrees celsius/minute from room temperature; Insulation is 8 hours after temperature arrives 950 degrees centigrade, obtains sample Cu behind the furnace cooling
2O (8 h).
Utilize the structure of X-ray diffractometer assay products, as shown in Figure 2, the result shows that product is pure cube Cu
2The O structure is not observed other dephasigns.The Magnetic Measurement result shows that sample at room temperature is paramagnetic characteristic (shown in Figure 3).
Claims (2)
1. one kind has room-temperature ferromagnetic CuO/Cu
2The preparation method of O block matrix material, concrete preparation technology is following:
A, high-purity CuO (99.99%) powder is tiled in the clean quartz boat;
B, quartz boat is put into tube furnace, be warming up to 950 degrees centigrade,, after 0-8 hour quartz boat is taken out or furnace cooling fast in insulation under 950 degrees centigrade of air atmosphere then, obtain having the CuO/Cu of room-temperature ferromagnetic with stove
2O block matrix material.
2. a kind of room-temperature ferromagnetic CuO/Cu that has according to claim 1
2The preparation method of O block matrix material is characterized in that: the temperature rise rate of tube furnace is 10 degrees celsius/minute among the said step B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210157576.XA CN102659166B (en) | 2012-05-21 | 2012-05-21 | Method for preparing CuO/Cu2O block composite material with room-temperature ferromagnetism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210157576.XA CN102659166B (en) | 2012-05-21 | 2012-05-21 | Method for preparing CuO/Cu2O block composite material with room-temperature ferromagnetism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102659166A true CN102659166A (en) | 2012-09-12 |
| CN102659166B CN102659166B (en) | 2014-07-02 |
Family
ID=46768788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210157576.XA Expired - Fee Related CN102659166B (en) | 2012-05-21 | 2012-05-21 | Method for preparing CuO/Cu2O block composite material with room-temperature ferromagnetism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102659166B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109592703A (en) * | 2018-12-18 | 2019-04-09 | 浙江大学自贡创新中心 | A kind of CuO/Cu2O-La2O3The preparation method of multiphase complex sol |
| CN110436529A (en) * | 2019-09-08 | 2019-11-12 | 兰州大学第一医院 | A kind of Fe can be used for magnetic thermotherapy3O4The preparation method of nano-bar material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070181A (en) * | 2011-01-14 | 2011-05-25 | 浙江大学 | Preparation method of cuprous oxide |
| CN102180509A (en) * | 2011-03-28 | 2011-09-14 | 浙江理工大学 | Method for preparing hollow CuO/Cu2O spheres with controllable ingredients |
-
2012
- 2012-05-21 CN CN201210157576.XA patent/CN102659166B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070181A (en) * | 2011-01-14 | 2011-05-25 | 浙江大学 | Preparation method of cuprous oxide |
| CN102180509A (en) * | 2011-03-28 | 2011-09-14 | 浙江理工大学 | Method for preparing hollow CuO/Cu2O spheres with controllable ingredients |
Non-Patent Citations (1)
| Title |
|---|
| L. LIAO, ET AL.: "P-type electrical, photoconductive, and anomalous ferromagnetic properties of Cu2O nanowires", 《APPLIED PHYSICS LETTERS》, 17 March 2009 (2009-03-17), pages 113106, XP012118447, DOI: doi:10.1063/1.3097029 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109592703A (en) * | 2018-12-18 | 2019-04-09 | 浙江大学自贡创新中心 | A kind of CuO/Cu2O-La2O3The preparation method of multiphase complex sol |
| CN110436529A (en) * | 2019-09-08 | 2019-11-12 | 兰州大学第一医院 | A kind of Fe can be used for magnetic thermotherapy3O4The preparation method of nano-bar material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102659166B (en) | 2014-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hiley et al. | Antiferromagnetism at T> 500 K in the layered hexagonal ruthenate SrR u 2 O 6 | |
| TW201001895A (en) | Thermomagnetic generator | |
| CN102931335A (en) | Graphene compounded with stibine cobalt base skutterudite thermoelectric material and preparation method of material | |
| Cai et al. | Giant reversible magnetocaloric effect in the pyrochlore Er 2 Mn 2 O 7 due to a cooperative two-sublattice ferromagnetic order | |
| CN101265099B (en) | Preparation method of high-temperature superconducting material | |
| CN105671344B (en) | One step prepares high-performance CoSb3The method of base thermoelectricity material | |
| Sun et al. | Insulator-to-metal transition and large thermoelectric effect in La1− xSrxMnAsO | |
| CN105347797A (en) | R2Cu2O5 oxide material used for low-temperature magnetic refrigeration and preparation method thereof | |
| CN103911660B (en) | A kind of dilute magnetic semiconductor material and preparation method thereof | |
| CN102659166B (en) | Method for preparing CuO/Cu2O block composite material with room-temperature ferromagnetism | |
| Esmailian et al. | Structural, electronic and magnetic properties of (N, C)-codoped ZnO nanotube: First principles study | |
| CN102251279A (en) | Ferromagnetic semiconductor crystal and preparation method thereof | |
| Niewa et al. | Rare-earth metal transition metal borocarbide and nitridoborate superconductors | |
| CN103811653B (en) | Multi-cobalt p type skutterudite filled thermoelectric material and preparation method thereof | |
| CN102000815B (en) | Negative pressure solid phase reaction preparation method for FeAs powder | |
| Chen et al. | Fe, Mn, and Cr doped BiCoO3 for magnetoelectric application: a first-principles study | |
| CN104217817A (en) | Production method of (Ba/Sr)<1-x>K<x>Fe<2>As<2> superconducting wires or strips | |
| CN106745021B (en) | A kind of Fe2AlB2The synthetic method of material | |
| CN102992771A (en) | Method for producing magnesium diboride-based superconducting block | |
| CN103130494B (en) | PbxPdO2 block material with room-temperature ferromagnetism, and preparation method thereof | |
| CN101250060A (en) | Method for preparing MgB2 superconductive material by using spherical magnesium powder | |
| Jia et al. | Emergence of 1/3 magnetization plateau and successive magnetic transitions in Zintl phase Eu 3 InAs 3 | |
| CN107204225B (en) | Fluorine-based ferromagnetic semiconductor material and preparation method thereof | |
| CN103311425A (en) | Process and device for producing thermoelectric conversion materials and process for producing sputtering target materials | |
| CN101723672A (en) | Method for preparing carbon-dopping MgB2 superconductor through step-by-step reaction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20150521 |
|
| EXPY | Termination of patent right or utility model |