Structural and magnetic properties of nanocrystalline equi-atomic spinel high-entropy oxide (AlCoFeMnNi)3O4 synthesised by microwave assisted co-precipitation technique

被引：51
作者：
Shaw, S. K. [1 ]
Gangwar, A. [1 ]
Sharma, A. [2 ]
Alla, S. K. [1 ,3 ]
Kavita, S. [4 ]
Vasundhara, M. [5 ]
Meena, Sher Singh [6 ]
Maiti, P. [7 ]
Prasad, N. K. [1 ]
机构：
[1] Banaras Hindu Univ, Indian Inst Technol, Dept Met Engn, Varanasi 221005, Uttar Pradesh, India
[2] Indian Inst Technol, Dept Met Engn & Mat Sci, Mumbai 400076, Maharashtra, India
[3] Vignans Inst Informat Technol, Dept Basic Sci & Humanities, Visakhapatnam 530049, Andhra Pradesh, India
[4] Int Adv Res Ctr Powder Met & New Mat ARCI, Chennai 600113, Tamil Nadu, India
[5] CSIR, Polymers & Funct Mat Dept, Indian Inst Chem Technol, Hyderabad 500007, Andhra Pradesh, India
[6] Bhabha Atom Res Ctr, Solid State Phys Div, Mumbai 400085, Maharashtra, India
[7] Banaras Hindu Univ, Sch Mat Sci & Technol, Indian Inst Technol, Varanasi 221005, Uttar Pradesh, India
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 878卷
关键词：
High-entropy oxide; Co-precipitation; Magnetic property; X-ray photoelectron; Mossbauer spectroscopy; X-RAY; MOSSBAUER; FERRITE; CO; STORAGE; AL3+; XPS;
D O I：
10.1016/j.jallcom.2021.160269
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Single phase equi-atomic (Al0.2Co0.2Fe0.2Mn0.2Ni0.2)(3)O-4 high-entropy oxide (HEO) having spinel structure was synthesised employing simple and cost effective microwave assisted co-precipitation technique, followed by calcination at 500 degrees C. The material obtained was highly crystalline and stable at higher temperatures. The uniformity in elemental distribution was apprehended through STEM-EDS elemental mapping. The X-ray photoelectron spectroscopy confirmed +3 ionic state for Fe and Al, while other elements oxidised to higher ionic states to maintain charge neutrality. Ferrimagnetic behaviour was confirmed for the obtained HEO through magnetic characterisations. (C) 2021 Elsevier B.V. All rights reserved.
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页数：9
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