Self-Assembly of Hollow Bismuth Ferrite Spheres from Nitrate Solutions

被引：5

作者：

Dmitriev, Alexander V. ^{[1
]}

Vladimirova, Elena V. ^{[1
]}

Kandaurov, Mikhail V. ^{[1
]}

Kellerman, Dina G. ^{[1
]}

Chufarov, Alexander Yu. ^{[1
]}

Tarakina, Nadezda V. ^{[2
]}

Tyutyunnik, Alexander P. ^{[1
]}

机构：

[1] Russian Acad Sci, Ural Branch, Inst Solid State Chem, 91 Pervomaiskaya Str, Ekaterinburg 620990, Russia

[2] Max Planck Inst Colloids & Interfaces, Muhlenberg 1, D-14476 Potsdam, Germany

来源：

JOURNAL OF ELECTRONIC MATERIALS | 2019年 / 48卷 / 08期

基金：

俄罗斯基础研究基金会;

关键词：

Bismuth ferrite; magnetic properties; hollow spheres; morphology; ultrasound spray pyrolysis; spray drying; MAGNETIC-STRUCTURES; X-RAY; CRYSTAL; DIFFRACTION;

D O I：

10.1007/s11664-019-07227-1

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Using the ultrasonic spray pyrolysis method, a controllable process is realized for self-assembly of spherical BiFeO3 aggregates. Powders are obtained, which exhibit as the pronounced ferromagnetic properties (the coercive force Hc at 8.8kOe and the residual magnetization Mp at 0.08emu/g) characteristic of conventionally sol-gel produced BiFeO3 samples (Hc and Mp approaching zero). Various manifestations of ferromagnetism are discussed. It is found that the ultimate values of magnetic characteristics are related to destruction of the antiferromagnetic cycloid as the shells of hollow BiFeO3 spheres are formed. The aggregates thus formed may be considered as an advanced type of bismuth ferrite nanostructure with no coverage in the literature.

引用

页码：4959 / 4969

页数：11

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