First-principles study on giant magneto-optical Kerr effect in double perovskites SrBB′O6 (B = Cr, Mo, B′ = W, Re, Os)

被引：6

作者：

Zu, Ningning ^{[1
]}

Zhang, Qi ^{[1
]}

Hao, Jiuyuan ^{[1
]}

Zhang, Min ^{[1
]}

Li, Jianjun ^{[1
]}

Liu, Xiangmei ^{[1
]}

Li, Rui ^{[1
]}

机构：

[1] Qiqihar Univ, Coll Sci, Dept Phys, Qiqihar 161006, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2022年 / 312卷

关键词：

Double perovskite; Magneto-optical Kerr effect; Interband transition; Plasma resonance; Computer simulation; MAGNETIC-PROPERTIES; ROOM-TEMPERATURE; MAGNETORESISTANCE; FERROMAGNETISM; FARADAY;

D O I：

10.1016/j.jssc.2022.123274

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Sr2CrB ' O-6 (B ' = W, Re, Os) are famous double perovskite oxides because of their high magnetic ordering temperature T-c and half metallic property. Based on them, Sr2MoB ' O-6 were designed, and were also reported to be half metals and possess T-c well above the room temperature. In this work, we systematically investigated the magneto-optical Kerr effect of Sr2BB ' O-6 (B = Cr, Mo, B ' = W, Re, Os) by the density functional theory. All these compounds exhibit remarkable magneto-optical Kerr effect in the infrared to visible spectral ranges. The maxima of Kerr rotation for half metals Sr2CrWO6, Sr2CrReO6, and Sr2MoOsO6 can reach up to -5.02 degrees, -2.56 degrees, and 4.45 degrees, respectively. The characteristics of the Kerr spectra in lower and higher energy region are dominated by two different mechanisms, respectively. Our work provides a theoretical basis for designing new magneto-optical materials.

引用

页数：7

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