Microstructure tuning and magnetism switching of ferroelectric barium titanate

Wenliang Zhou; Hongmei Deng; Nuofan Ding; Lu Yu; Fangyu Yue; Pingxiong Yang; Junhao Chu

doi:10.1016/j.matchar.2015.06.034

Microstructure tuning and magnetism switching of ferroelectric barium titanate

Wenliang Zhou
, Hongmei Deng
, Nuofan Ding
, Lu Yu
, Fangyu Yue^*
, Pingxiong Yang
, Junhao Chu

^*Corresponding author for this work

School of Physics and Electronic Science

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Abstract Single-crystal and polycrystal BaTiO₃ (BTO) materials synthesized by the physical and chemical methods, respectively, have been studied based on microstructural characterizations and magnetic measurements. The results of X-ray diffraction and Raman scatting spectra show that a single crystal tetragonal to polycrystalline pseudo-cubic structure transformation occurs in BTO ferroelectrics, dependent of growth conditions and interface effects. High-resolution transmission electron microscope data indicate that the as-prepared BTO/SrTiO₃ (001) and BTO/SrRuO₃/SrTiO₃ (001) heterostructures are highly c-axis oriented with atomic sharp interfaces. Lattice defects (i.e., edge-type misfit dislocations and stacking faults) in the heterostructures could be identified clearly and showed tunable with the variations of interface strain. Furthermore, the effects of vacancy defects on magnetic properties of BTO are discussed, which shows a diamagnetism-ferromagnetism switching as intrinsic vacancies increase. This work opens up a possible avenue to prepare magnetic BTO ferroelectrics.

Original language	English
Article number	7954
Pages (from-to)	1-6
Number of pages	6
Journal	Materials Characterization
Volume	107
DOIs	https://doi.org/10.1016/j.matchar.2015.06.034
State	Published - 8 Jul 2015

Keywords

Barium titanate
Ferromagnetism
Lattice defects
Transmission electron microscopy

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10.1016/j.matchar.2015.06.034

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@article{c533ced1f9da4214971b0b16cd4deb15,

title = "Microstructure tuning and magnetism switching of ferroelectric barium titanate",

abstract = "Abstract Single-crystal and polycrystal BaTiO3 (BTO) materials synthesized by the physical and chemical methods, respectively, have been studied based on microstructural characterizations and magnetic measurements. The results of X-ray diffraction and Raman scatting spectra show that a single crystal tetragonal to polycrystalline pseudo-cubic structure transformation occurs in BTO ferroelectrics, dependent of growth conditions and interface effects. High-resolution transmission electron microscope data indicate that the as-prepared BTO/SrTiO3 (001) and BTO/SrRuO3/SrTiO3 (001) heterostructures are highly c-axis oriented with atomic sharp interfaces. Lattice defects (i.e., edge-type misfit dislocations and stacking faults) in the heterostructures could be identified clearly and showed tunable with the variations of interface strain. Furthermore, the effects of vacancy defects on magnetic properties of BTO are discussed, which shows a diamagnetism-ferromagnetism switching as intrinsic vacancies increase. This work opens up a possible avenue to prepare magnetic BTO ferroelectrics.",

keywords = "Barium titanate, Ferromagnetism, Lattice defects, Transmission electron microscopy",

author = "Wenliang Zhou and Hongmei Deng and Nuofan Ding and Lu Yu and Fangyu Yue and Pingxiong Yang and Junhao Chu",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Inc.",

year = "2015",

month = jul,

day = "8",

doi = "10.1016/j.matchar.2015.06.034",

language = "英语",

volume = "107",

pages = "1--6",

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TY - JOUR

T1 - Microstructure tuning and magnetism switching of ferroelectric barium titanate

AU - Zhou, Wenliang

AU - Deng, Hongmei

AU - Ding, Nuofan

AU - Yu, Lu

AU - Yue, Fangyu

AU - Yang, Pingxiong

AU - Chu, Junhao

PY - 2015/7/8

Y1 - 2015/7/8

N2 - Abstract Single-crystal and polycrystal BaTiO3 (BTO) materials synthesized by the physical and chemical methods, respectively, have been studied based on microstructural characterizations and magnetic measurements. The results of X-ray diffraction and Raman scatting spectra show that a single crystal tetragonal to polycrystalline pseudo-cubic structure transformation occurs in BTO ferroelectrics, dependent of growth conditions and interface effects. High-resolution transmission electron microscope data indicate that the as-prepared BTO/SrTiO3 (001) and BTO/SrRuO3/SrTiO3 (001) heterostructures are highly c-axis oriented with atomic sharp interfaces. Lattice defects (i.e., edge-type misfit dislocations and stacking faults) in the heterostructures could be identified clearly and showed tunable with the variations of interface strain. Furthermore, the effects of vacancy defects on magnetic properties of BTO are discussed, which shows a diamagnetism-ferromagnetism switching as intrinsic vacancies increase. This work opens up a possible avenue to prepare magnetic BTO ferroelectrics.

AB - Abstract Single-crystal and polycrystal BaTiO3 (BTO) materials synthesized by the physical and chemical methods, respectively, have been studied based on microstructural characterizations and magnetic measurements. The results of X-ray diffraction and Raman scatting spectra show that a single crystal tetragonal to polycrystalline pseudo-cubic structure transformation occurs in BTO ferroelectrics, dependent of growth conditions and interface effects. High-resolution transmission electron microscope data indicate that the as-prepared BTO/SrTiO3 (001) and BTO/SrRuO3/SrTiO3 (001) heterostructures are highly c-axis oriented with atomic sharp interfaces. Lattice defects (i.e., edge-type misfit dislocations and stacking faults) in the heterostructures could be identified clearly and showed tunable with the variations of interface strain. Furthermore, the effects of vacancy defects on magnetic properties of BTO are discussed, which shows a diamagnetism-ferromagnetism switching as intrinsic vacancies increase. This work opens up a possible avenue to prepare magnetic BTO ferroelectrics.

KW - Barium titanate

KW - Ferromagnetism

KW - Lattice defects

KW - Transmission electron microscopy

UR - https://www.scopus.com/pages/publications/84936764851

U2 - 10.1016/j.matchar.2015.06.034

DO - 10.1016/j.matchar.2015.06.034

M3 - 文章

AN - SCOPUS:84936764851

SN - 1044-5803

VL - 107

SP - 1

EP - 6

JO - Materials Characterization

JF - Materials Characterization

M1 - 7954

ER -

Microstructure tuning and magnetism switching of ferroelectric barium titanate

Abstract

Keywords

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