Second-order phase transition with coexistence of short-range and long-range ferromagnetic interactions in Ba1.7La0.3FeMoO6 compound

被引：2

作者：

Tran Dang Thanh ^{[1
]}

Oh, Suhk-Kun ^{[1
]}

Kim, Dong-Hyun ^{[1
]}

Yu, Seong-Cho ^{[1
]}

Demyanov, S. E. ^{[2
]}

Kalanda, N. A. ^{[2
]}

Yarmolich, M. V. ^{[2
]}

Kovalev, L. V. ^{[2
]}

机构：

[1] Chungbuk Natl Univ, Dept Phys, Cheongju 361763, South Korea

[2] NAS Belarus, Sci Pract Res Ctr, BY-220072 Minsk, BELARUS

来源：

CURRENT APPLIED PHYSICS | 2014年 / 14卷 / 06期

关键词：

Double perovskites; Critical behavior; Magnetic phase transition; MAGNETIC ENTROPY; BEHAVIOR; NICKEL; SIZE; 1ST;

D O I：

10.1016/j.cap.2014.03.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, the magnetic properties and critical behavior around ferromagnetic-paramagnetic (FM-PM) phase transition in Ba1.7La0.3FeMoO6 compound have been investigated in detail. This compound exhibits a second-order magnetic phase transition with Curie temperature TC 345 K. The critical exponents beta, gamma, and delta that are determined by using the modified Arrott plots (MAP), the Kouvel-Fisher (KF) and the critical isotherm analysis agree very well. Our results indicate a coexistence of short-range and long-range ferromagnetic (FM) interactions in Ba1.7La0.3FeMoO6 compound. The existence of long-range FM interactions in this compound can be associated with the crystal structure of materials with long-range Fe/Mo ordering parameter and strength of double-exchange interaction, whereas the existence of the short-range FM interactions can be explained by magnetic inhomogeneity and FM clusters. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：886 / 891

页数：6

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