JP7097072B2 - 応力発光材料、及び応力発光体、並びに応力発光材料の使用 - Google Patents
応力発光材料、及び応力発光体、並びに応力発光材料の使用 Download PDFInfo
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- JP7097072B2 JP7097072B2 JP2018544680A JP2018544680A JP7097072B2 JP 7097072 B2 JP7097072 B2 JP 7097072B2 JP 2018544680 A JP2018544680 A JP 2018544680A JP 2018544680 A JP2018544680 A JP 2018544680A JP 7097072 B2 JP7097072 B2 JP 7097072B2
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G33/00—Compounds of niobium
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/67—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
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Description
試料の調製は固相合成法によって行った。ニオブ化合物としてNb2O5、リチウム化合物としてLi2CO3、希土類金属及び遷移金属から選ばれる少なくとも1種の金属の化合物としてPr2O3を用い、LixNbO3:Pr3+ yのx及びyが目的組成になるよう秤量後、メノウ乳鉢で混合・粉砕した。xは、0.8<x≦3.0の範囲内で調整し、yは、0.0001≦y≦0.2の範囲内で調整した。
上記〔1.応力発光材料の調製〕に従い、LixNbO3:Pr3+ y(x=1, 0≦y≦0.1)の調製を行った。調製した試料は粉末X線回折装置により結晶相の同定を行った。その結果を図1に示す。
前述の〔1.応力発光材料の調製〕に従い、LixNbO3:Pr3+ y(0.95≦x≦1.05, y=0.01)の調製を行った。調製した試料は粉末X線回折装置により結晶相の同定を行った。その結果を図4に示す。
F=面積×応力=μm×μm×ヤング率×ひずみ
であることに鑑みると、力FはpNレベルの力であるため、本実験結果から本実施形態に係る応力発光材料は、pNレベルの力を検知可能であることが分かる。
前述の〔1.応力発光材料の調製〕に従い、LixNbO3:Pr3+ y(1.00≦x≦2.4, y=0.01)の調製を行った。調製した試料は粉末X線回折装置により結晶相の同定を行った。その結果を図8に示す。
次に、上述してきたPr3+以外の金属イオンをドープした際の応力発光について検討を行った。具体的には、Li1.00NbO3:Eu3+ 0.01、Li1.00NbO3:Er3+ 0.01、Li1.00NbO3:Nd3+ 0.01について、先の〔2.LixNbO3:Pr3+ y(x=1, 0≦y≦0.1)の検討〕と同様、焼成試料と樹脂を混合し円柱形の樹脂ペレット(直径:2.5 cm、高さ:1.5 cm)を作成して応力発光体とし、応力発光評価システムにより評価した。測定方法は、樹脂ペレットに対し垂直方向の荷重(1000N)を印加し、その時の発光強度をフォトンセンサで測定した。その結果を図10に示す。
これまで述べてきたように、本実施形態に係る応力発光材料は、極めて小さな応力やひずみに応答して発光を示すものであり、特に、100μst以下の微小ひずみに対しても発光を示す点が特徴的であると言える。
Claims (5)
- LiNbO3の結晶体を構成する一部のLiが、Pr3+、Er3+、Eu3+から選ばれる少なくとも1種の金属イオンMにより置換された一般式LixNbO3:Myで表される非化学量論的組成を有し、x>1-yであって、0.001≦y≦0.1であり、0.99≦x≦2.4であることを特徴とする応力発光材料。
- 請求項1に記載の応力発光材料が所定のマトリクス材料中に分散された応力発光体。
- 1000pN以下の力を発光により検出するための請求項1に記載の応力発光材料の使用。
- 100μst以下の微小ひずみを発光により検知するための請求項1に記載の応力発光材料の使用。
- ニオブ化合物と、リチウム化合物と、プラセオジム、エルビウム、ユウロピウムから選ばれる少なくとも1種の金属の化合物とを混合して焼成してなり、LiNbO3を母体材料とし、結晶体を構成する一部のLiがPr3+、Er3+、Eu3+から選ばれる少なくとも1種の金属イオンMにより置換された一般式LixNbO3:Myで表される非化学量論的組成を有し、x>1-yであって、0.001≦y≦0.1である応力発光材料の製造方法であって、ニオブ原子とリチウム原子とのモル比を1:0.99~2.4とすることを特徴とする応力発光材料の製造方法。
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JP2016200954 | 2016-10-12 | ||
JP2016200954 | 2016-10-12 | ||
PCT/JP2017/018824 WO2018070072A1 (ja) | 2016-10-12 | 2017-05-19 | 応力発光材料、及び応力発光体、並びに応力発光材料の使用 |
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JPWO2018070072A1 JPWO2018070072A1 (ja) | 2019-09-05 |
JP7097072B2 true JP7097072B2 (ja) | 2022-07-07 |
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CN113355094A (zh) * | 2021-05-17 | 2021-09-07 | 武汉大学 | 一种可实现重复应力发光的异质结构材料及其制备方法 |
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JP2007101278A (ja) | 2005-09-30 | 2007-04-19 | National Institute Of Advanced Industrial & Technology | 応力−ひずみ検出システム |
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Non-Patent Citations (14)
Title |
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BASUN S. A. et al.,Dominant Cr3+ Centers in LiNbO3 under Hydrostatic Pressure,Physics of the Solid State,2001年,43(6),1043-1051,ISSN:1063-7834 |
BASUN S. A. et al.,Optical characterization of Cr3+ centers in LiNbO3,Applied Physics B Laser and Optics,2001年,73(5-6),453-461,ISSN:0946-2171 |
BRANNON P. J. et al.,Shock-induced luminescence from Z-cut lithium niobate,Journal of Applied Physics,1985年,57(5),1676-1679,ISSN:1089-7550 |
GRINBERG M. et al,Impurity-trapped excitons: Experimental evidence and theoretical concept,Journal of Non-Crystalline Solids,2008年,354,4163-4169,ISSN:0022-3093 |
GRYK W. et al,High pressure spectroscopy of Pr3+ in LiNbO3,Journal of Alloys and Compounds,2004年,380,230-234,ISSN:0925-8388 |
GRYK W. et al.,Pressure effect on luminescence dynamics in Pr3+-doped LiNbO3 and LiTaO3 crystals,Journal of Physics: Condenced Matter,2006年,18(1),117-125,ISSN:0953-8984 |
KAMINSKA A. et al.,High-pressure and magneto-optical studies of Cr-related defects in the lithium-rich LiNbO3:Cr,Mg cry,Physical Review B Condensed Matter and Materials Physics,2007年,76(14),144117-1~144117-10,ISSN:1098-0121 |
KAMINSKA A. et al.,High-pressure spectroscopy of LiNbO3:MgO,Cr3+ crystals,Journal of Luminescence,2000年,87-89,571-573,ISSN:0022-2313 |
KAMINSKA A. et al.,Luminescence of LiNbO3:MgO,Cr crystals under high pressure,Physical Review B Condenced Matter and Materials Physics,1999年,60(11),7707-7710,ISSN:0163-1829 |
RAMIREZ M. et al.,Influence of hydrostatic pressure on radiative transition probability of the intrashell 4f transitio,Physical Review B Condensed Matter and Materials Physics,2005年,72(22),224104-1~224104-5,ISSN:1098-0121 |
SKVORTSOV A. P. et al.,Stark effect for rare-earth dopants in LiNbO3,EMIS datareviews series,2002年,(28),209-212,ISSN:0950-1398 |
WANG Jia et al.,Effect of Yb Codoping on the Phase Transition, and Electrical and Photoluminescence Properties in KN,Journal of the American Ceramic Society,2016年04月18日,99(5),1625-1630,ISSN:0002-7820 |
ZHAO Yongjie et al.,Comprehensive investigation of Er2O3 dioed (Li,K,Na)NbO3 ceramics rendering potential application in,Journal of Alloys and Compounds,2016年05月10日,683,171-177,ISSN:0925-8388 |
ZHAO Yongjie et al.,Effect of phase structure changes on the lead-free Er3+-doped (K0.52Na0.48)1-xLixNbO3 piezoelectric,Journal of Alloys and Compounds,2016年04月11日,680,467-472,ISSN:0925-8388 |
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