Poisson's ratio of BiFeO3 thin films: X-ray reciprocal space mapping under variable uniaxial strain

被引：13

作者：

Hu, S. ^{[1
]}

Alsubaie, A. ^{[1
,2
]}

Wang, Y. ^{[3
]}

Lee, J. H. ^{[4
]}

Kang, K. -R. ^{[5
]}

Yang, C. -H. ^{[4
,5
]}

Seidel, J. ^{[1
]}

机构：

[1] UNSW Australia, Sch Mat Sci & Engn, Sydney, NSW, Australia

[2] Taif Univ, Sch Phys, At Taif, Saudi Arabia

[3] UNSW Australia, Solid State & Elemental Anal Unit, Mark Wainwright Analyt Ctr, Sydney, NSW, Australia

[4] Korea Adv Inst Sci & Technol, Dept Phys, Daejeon 34141, South Korea

[5] Korea Adv Inst Sci & Technol, Inst NanoCentury, Daejeon 34141, South Korea

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2017年 / 214卷 / 01期

基金：

澳大利亚研究理事会; 新加坡国家研究基金会;

关键词：

BiFeO3; elastic properties; mechanical properties; multiferroics; thin films; X-ray diffraction; THERMAL-EXPANSION COEFFICIENT; DOMAIN-WALLS; STRESS;

D O I：

10.1002/pssa.201600356

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the mechanical properties of BiFeO3 (BFO) thin films grown on SrTiO3 (001) substrates that were manually bent using a specially designed uniaxial bending stage. X-ray measurements under variable uniaxial strain show that excessive strains up to approximate to 2% could be applied along the [100] direction with little cross talk between [100] and [010] directions. X-ray reciprocal space maps were acquired to investigate the evolution of -a and c-axis lattice constants under variable strain and Poisson's ratio of BFO thin films v(zx) was determined to be 0.30 +/- 0.01.

引用

页数：5

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