Structural, electronic and magnetic properties of La1.5Ca0.5(Co0.5Fe0.5)IrO6 double perovskite

被引：4
|
作者：
Bufaical, L. [1 ]
Heringer, M. A., V [2 ]
Jesus, J. R. [2 ]
Caytuero, A. [2 ]
Macchiutti, C. [2 ]
Bittar, E. M. [2 ]
Baggio-Saitovitch, E. [2 ]
机构：
[1] Univ Fed Goias, Inst Fis, BR-74001970 Goiania, Go, Brazil
[2] Ctr Brasileiro Pesquisas Fis, Rua Dr Xavier Sigaud 150, BR-22290180 Rio De Janeiro, RJ, Brazil
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2022年 / 556卷
关键词：
Double-perovskite; Ferrimagnetism; Cobalt; Iron; Iridium; MAGNETORESISTANCE;
D O I：
10.1016/j.jmmm.2022.169408
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, we report the synthesis and investigation of structural, electronic, and magnetic properties of La1.5Ca0.5(Co0.5Fe0.5)IrO6. Our polycrystalline sample forms as a single-phase double perovskite in monoclinic P2(1)/n space group. Co and Ir are most likely in bivalent and tetravalent oxidation states, respectively, while Mossbauer spectroscopy indicates that Fe is in a trivalent state. The ac and dc magnetization data suggest a ferrimagnetic behavior resulting from the presence of two antiferromagnetic sublattices at Co/Fe and Ir sites. The large coercive field H-c similar or equal to 32 kOe observed at 10 K, comparable to that of other double perovskites of interest for hard magnets, is discussed in terms of the structural distortion and the spin and orbital magnetic moments of the transition metal ions.
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收藏
页数：6
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