Unusual dynamic magnetic behavior of polycrystalline La2NiMnO6

被引：19

作者：

Yuan, Xueping ^{[1
]}

Li, Qiuhang ^{[1
]}

Hu, Jianzhong ^{[1
]}

Xu, Mingxiang ^{[1
,2
]}

机构：

[1] Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China

[2] Southeast Univ, Key Lab MEMS, Minist Educ, Nanjing 210096, Jiangsu, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2013年 / 424卷

关键词：

Polycrystalline; Magnetic properties; Double perovskite; SPIN-GLASS; MANGANITES; SUSCEPTIBILITY; SEMICONDUCTOR; DISORDER;

D O I：

10.1016/j.physb.2013.04.057

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Single-phase polycrystalline La2NiMnO6 was studied by means of magnetization and specific heat measurements. This monoclinic perovskite material shows ferromagnetic behavior with T-c about 270 K. ac Susceptibility of the sample shows a strong frequency dependent behavior. Fitting results of the relationship between freezing temperature and frequency indicate that the present sample can be better described as a system with superparamagnetic (SPM) behavior. This dynamic magnetic behavior was further confirmed by the weak magnetic relaxation and memory effect. The SPM behavior was explained in terms of formation of clusters in the magnetic background. Moreover, specific heat at 0 T and 9T both shows broad transition around T-c. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：73 / 78

页数：6

共 36 条

[1] Reentrant spin glass behavior in La0.8Sr0.2Mn1-xTixO3 manganites [J].

Aslibeiki, B. ;

Kameli, P. ;

Salamati, H. .

SOLID STATE COMMUNICATIONS, 2009, 149 (31-32) :1274-1277

[2] Superparamagnetism in polycrystalline Li0.5Ni0.5O samples:: Low-field susceptibility measurements [J].

Bajpai, A ;

Banerjee, A .

PHYSICAL REVIEW B, 2000, 62 (13) :8996-9004

[3] Spin disorder in Fe-doped manganites [J].

Barandiaran, J. M. ;

Bermejo, F. J. ;

Gutierrez, J. ;

Barquin, L. Fernandez .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2007, 353 (8-10) :757-762

[4] Supermagnetism [J].

Bedanta, Subhankar ;

Kleemann, Wolfgang .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2009, 42 (01)

[5] Effect of disorder on the magnetic properties of LaMn0.5Fe0.5O3 -: art. no. 054426 [J].

Bhame, SD ;

Joly, VLJ ;

Joy, PA .

PHYSICAL REVIEW B, 2005, 72 (05)

[6] Nonlinear susceptibilities as a probe to unambiguously distinguish between canonical and cluster spin glasses [J].

Bitla, Yugandhar ;

Kaul, S. N. ;

Fernandez Barquin, L. .

PHYSICAL REVIEW B, 2012, 86 (09)

[7] Mean-field treatment of nonlinear susceptibilities for a ferromagnet of arbitrary spin [J].

Bitla, Yugandhar ;

Kaul, S. N. .

EPL, 2011, 96 (03)

[8] Observation of isotropic-dipolar to isotropic-Heisenberg crossover in Co- and Ni-substituted manganites [J].

Bitla, Yugandhar ;

Kaul, S. N. ;

Barquin, L. Fernandez ;

Gutierrez, J. ;

Barandiaran, J. M. ;

Pena, A. .

NEW JOURNAL OF PHYSICS, 2010, 12

[9] DYNAMIC SCALING IN THE EU0.4SR0.6S SPIN-GLASS [J].

BONTEMPS, N ;

RAJCHENBACH, J ;

CHAMBERLIN, RV ;

ORBACH, R .

PHYSICAL REVIEW B, 1984, 30 (11) :6514-6520

[10] Spin glass behaviour and extrinsic origin of magnetodielectric effect in non-multiferroic La2NiMnO6 nanoparticles [J].

Chandrasekhar, K. Devi ;

Das, A. K. ;

Venimadhav, A. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2012, 24 (37)

← 1 2 3 4 →