Substrate-imposed strain engineering of multiferroic properties in BCZT/LCMO bilayer heterostructures

被引：7
作者：
Hu, Mingzhe [1 ]
Li, Songbin [2 ]
Wang, Chuanbin [2 ]
机构：
[1] Guizhou Minzu Univ, Sch Mechatron Engn, Guiyang 550025, Guizhou, Peoples R China
[2] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2020年 / 509卷
基金：
美国国家科学基金会; 中国国家自然科学基金;
关键词：
Strain engineering; BCZT/LCMO; Electrical properties; Ferromagnetic properties; Magnetoelectric properties; DIELECTRIC-PROPERTIES; MAGNETOELECTRIC PROPERTIES; THIN-FILMS; STRESS;
D O I：
10.1016/j.apsusc.2020.145314
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Ba0.85Ca0.15Zr0.9Ti0.1O3/La0.67Ca0.33MnO3 (BCZT/LCMO) bilayer epitaxial heterostructures were deposited on LaAlO3 (LAO), (LaAlO3)(0.3) (Sr2AlTaO6)(0.7) (LSAT) and SrTiO3 (STO) single-crystalline substrates by using pulsed laser deposition, to investigate the substrate-imposed strain engineering of multiferroic properties. The epitaxial growth and the strain state of the as-deposited bilayer heterostructures were determined by X-ray reciprocal space mapping analysis. Results showed that the substrate-imposed strain engineering could turn the multiferroic properties by modulating the polarization switching and domain wall motion of the bilayer heterostructures. The optimal dielectric, ferroelectric and piezoelectric performances were obtained in the bilayer heterostructure deposited on STO substrate while an improved saturated magnetization was achieved in the bilayer heterostructure deposited on LAO substrate. The maximum magnetoelectric coupling was obtained in the bilayer heterostructure deposited on STO substrate with alpha(E31) value of 61.2 mV/cm.Oe.
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页数：6
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