Effect of Fe deficiency on the crystalline structure and magnetic properties of M-type strontium hexaferrite

Ciyu Qin; Yang Sun; Ziyu Li; Ruoshui Liu; Xiaodong Jing; Lichen Wang; Tongyun Zhao; Huayang Gong

Arabian Journal of Chemistry (Sep 2023)

Effect of Fe deficiency on the crystalline structure and magnetic properties of M-type strontium hexaferrite

Ciyu Qin,
Yang Sun,
Ziyu Li,
Ruoshui Liu,
Xiaodong Jing,
Lichen Wang,
Tongyun Zhao,
Huayang Gong

Affiliations

Ciyu Qin: School of Rare Earths, University of Science and Technology of China, Hefei, Anhui 230026, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, Jiangxi 341119, China
Yang Sun: School of Rare Earths, University of Science and Technology of China, Hefei, Anhui 230026, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, Jiangxi 341119, China
Ziyu Li: School of Rare Earths, University of Science and Technology of China, Hefei, Anhui 230026, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, Jiangxi 341119, China
Ruoshui Liu: School of Rare Earths, University of Science and Technology of China, Hefei, Anhui 230026, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, Jiangxi 341119, China; Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Xiaodong Jing: School of Rare Earths, University of Science and Technology of China, Hefei, Anhui 230026, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, Jiangxi 341119, China; State Key Laboratory of Multiphase Complex Systems, Beijing Engineering Research Centre of Process Pollution Control, Institute of Process Engineering, Chinese Academy of Sciences, No. 1, 2nd North Street, Zhongguancun, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China
Lichen Wang: Ningbo Institute of Materials Technology & Engineering, Chineses Academy of Sciences, Ningbo, Zhejiang 315201, China; Innovation Center for Applied Magnetics of Zhejiang Province, Ningbo, Zhejiang 315201, China
Tongyun Zhao: School of Rare Earths, University of Science and Technology of China, Hefei, Anhui 230026, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, Jiangxi 341119, China; Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Huayang Gong: School of Rare Earths, University of Science and Technology of China, Hefei, Anhui 230026, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, Jiangxi 341119, China; Corresponding author at: School of Rare Earths, University of Science and Technology of China, Hefei, Anhui 230026, China.

Journal volume & issue: Vol. 16, no. 9
p. 105092

Abstract

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In this study, we prepared a single M-type strontium ferrite phase with different iron contents using the traditional ceramic method and studied the effect of iron deficiency on the crystalline structure and magnetic properties of M-type hexaferrite strontium has been studied. With the decrease in iron content, the saturation magnetization of M-type strontium ferrite SrO·nFe2O3 powders (5.49 ≤ n ≤ 5.95) decreases by 5.5% and 4.7% at 300 K and 5 K, respectively. The change in Fe3+ occupancy was determined using X-ray diffraction spectroscopy. The occupancy of Fe3+ in sublattices 2a, 12k and 4f1 decreased with decreasing Fe content, and the decreased amplitude was in the order 2a > 4f1 > 12k. In addition, the (4f1 site) Fe3-O2-Fe5 (12k site) and (4f1 site) Fe3O2 bond length decreased and increased, respectively, with decreasing Fe content. These results are of great significance for improving the magnetism of SrM by regulating iron vacancies in its structure.

Published in Arabian Journal of Chemistry

ISSN: 1878-5352 (Print)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: http://www.journals.elsevier.com/arabian-journal-of-chemistry/

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