Solution combustion synthesis and magnetic property of rock-salt (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O high-entropy oxide nanocrystalline powder

被引：136

作者：

Mao, Aiqin ^{[1
,3
]}

Xiang, Hou-Zheng ^{[1
]}

Zhang, Zhan-Guo ^{[2
]}

Kuramoto, Koji ^{[2
]}

Yu, Haiyun ^{[1
]}

Ran, Songlin ^{[3
]}

机构：

[1] Anhui Univ Technol, Sch Mat Sci & Engn, Maxiang Rd, Maanshan 243002, Peoples R China

[2] Natl Inst Adv Ind Sci & Technol, 16-1 Onogawa, Tsukuba, Ibaraki 3058569, Japan

[3] Anhui Univ Technol, Minist Educ, Key Lab Met Emiss Reduct & Resources Recycling, 59 Hudong Rd, Maanshan 243002, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2019年 / 484卷

关键词：

Solution combustion synthesis; High-entropy oxide; (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O; Nanocrystalline powder; Antiferromagnetism; SOLID-SOLUTION FORMATION; RARE-EARTH; TRANSITION; MICROSTRUCTURE; THERMODYNAMICS; DISTORTION; STRENGTH; STRAIN; ALLOYS;

D O I：

10.1016/j.jmmm.2019.04.023

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A facile solution combustion synthesis method was successfully applied to synthesize single rock-salt structural (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O high-entropy oxide (HEO) nanocrystalline powder with chemical homogeneity. The XRD patterns with Rietveld refinement reveal the formation of single-phase rock-salt structure occurs only at the synthesis temperatures >= 1123 K, and the average nanocrystalline size is about 43 nm. Moreover, two series of experiments confirm the effect of configurational entropy on phase stabilization. Furthermore, the as-synthesized single-phase (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O nanocrystalline powder exhibits long-range antiferromagnetic behavior below Neel temperature (T-N = 106 K), which can be well understood by the super-exchange interactions in the rock-salt HEO. The powder also shows lower T-N due to the significant amount of nonmagnetic ions suppressing the antiferromagnetic order.

引用

页码：245 / 252

页数：8

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