Origin of magnetism and trend in Tc in Cr-based double perovskites: Interplay of two driving mechanisms

被引：62

作者：

Das, Hena ^{[1
]}

Sanyal, Prabuddha ^{[1
]}

Saha-Dasgupta, T. ^{[1
]}

Sarma, D. D. ^{[2
]}

机构：

[1] SN Bose Natl Ctr Basic Sci, Kolkata 700098, India

[2] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 10期

关键词：

CURIE-TEMPERATURE; TRANSITION;

D O I：

10.1103/PhysRevB.83.104418

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hamiltonian constructed in a first principles manner, we explored the origin of magnetism and the T-c trend in Cr-based double perovskite series, Sr2CrB'O-6 (B' = W/Re/Os). Our study shows that the apparently puzzling T-c trend in Sr2CrB'O-6 (B' = W/Re/Os) series can be understood in terms of the interplay of the hybridization driven mechanism and the superexchange mechanism.

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页数：5

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