Excellent near-UV emission and room-temperature ferromagnetism of square-like nano-CeO2 mingled with Ce(OH)3 synthesised by a hydrothermal method

被引：1

作者：

Meng, Fanming ^{[1
]}

Fan, Zhenghua ^{[1
]}

Chen, Guodong ^{[1
]}

Yang, Xin ^{[1
]}

机构：

[1] Anhui Univ, Anhui Key Lab Informat Mat & Devices, Hefei 230601, Peoples R China

来源：

MICRO & NANO LETTERS | 2016年 / 11卷 / 06期

关键词：

ferromagnetic materials; nanomagnetics; cerium compounds; nanofabrication; nanoparticles; X-ray diffraction; X-ray photoelectron spectra; scanning electron microscopy; transmission electron microscopy; Raman spectra; photoluminescence; vacancies (crystal); coercive force; magnetic particles; ferromagnetism; square-like nano-CeO2 mingled materials; hydrothermal route; cerium source; ethylenediamine complexant; mineraliser complexant; nanoparticle synthesis; X-ray photoelectron spectroscopy; high-resolution transmission electron microscopy; Raman scattering; photoluminescence spectra; fluorite cubic structure; vacancies; near-UV emission; M-H curve; saturation magnetisation; coercivity; residual magnetisation; CeO2-Ce(OH)(3); PHOTOCATALYTIC ACTIVITY; CEO2; CLUSTERS; DEFECTS;

D O I：

10.1049/mnl.2015.0591

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Square-like nano-CeO2 mingled with Ce(OH)(3) was successfully synthesised via a hydrothermal route using CeCl(3)7H(2)O as cerium source, N2H4H2O as mineraliser, and ethylenediamine as complexant. The as-synthesised nanoparticles were characterised by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscope, high-resolution transmission electron microscopy, Raman scattering, photoluminescence spectra (PL), and magnetisation measurements. It was found that nano-CeO2 has a fluorite cubic structure, and there are defects and vacancies in the sample. PL spectrum showed excellent near-UV emission. M-H curve exhibited excellent room-temperature ferromagnetism with saturation magnetisation of 0.0300 emu/g, coercivity of 73.706 Oe, and residual magnetisation of 2.37 x 10(-3) emu/g, which can be mainly associated with the surface Ce4+/Ce3+ pairs and oxygen vacancies in the nano-CeO2.

引用

页码：284 / 286

页数：3