多铁性YFeO₃纳米粉末的结构可控合成及其光学和磁性特性

Structure-Controllable Synthesis of Multiferroic YFeO₃ Nanopowders and Their Optical and Magnetic Properties.

作者信息

Wang Meng, Wang Ting, Song Shenhua, Tan Manlin

机构信息

Shenzhen Key Laboratory of Advanced Materials, Department of Materials Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China.

Research Institute of Tsinghua University in Shenzhen, Shenzhen 518055, China.

出版信息

Materials (Basel). 2017 Jun 7;10(6):626. doi: 10.3390/ma10060626.

DOI:10.3390/ma10060626

PMID:28772985

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5553534/

Abstract

Phase-pure hexagonal and orthorhombic YFeO₃ nanopowders are synthesized by low-temperature solid-state reaction along with Zr doping. The obtained powders are characterized by X-ray diffraction, field emission scanning electron microscopy, and physical property measurements. The hexagonal YFeO₃ exhibits a narrower optical band gap in comparison to the orthorhombic one, while the orthorhombic YFeO₃ presents better magnetic properties. The formation of hexagonal or orthorhombic phase can be effectively controlled by Zr doping. The temperature range of synthesizing the hexagonal YFeO₃ nanopowders is increased by ~200 °C due to Zr doping so that they can be easily synthesized, which possesses a finer particle size and a smaller optical band gap, making it favorable for optical applications.

摘要

通过低温固态反应并掺杂Zr合成了纯相的六方和正交YFeO₃纳米粉末。通过X射线衍射、场发射扫描电子显微镜和物理性能测量对所得粉末进行了表征。与正交YFeO₃相比，六方YFeO₃具有更窄的光学带隙，而正交YFeO₃具有更好的磁性。通过Zr掺杂可以有效地控制六方或正交相的形成。由于Zr掺杂，合成六方YFeO₃纳米粉末的温度范围提高了约200°C，从而可以轻松合成，其具有更细的粒径和更小的光学带隙，有利于光学应用。