Influence of Eu doping on magnetocaloric behavior of La0.67Sr0.33Mn03

被引：37

作者：

Raju, K. ^{[1
]}

Kumar, N. Pavan ^{[2
]}

Reddy, P. Venugopal ^{[2
]}

Yoon, D. H. ^{[1
]}

机构：

[1] Yeungnam Univ, Sch Mat Sci & Engn, Gyongsan 712749, South Korea

[2] Osmania Univ, Dept Phys, Hyderabad 500007, Andhra Pradesh, India

来源：

PHYSICS LETTERS A | 2015年 / 379卷 / 16-17期

关键词：

Magnetocaloric effect; Magnetization Magnetic entropy change; Relative cooling power; LA0.7CA0.3MNO3; MANGANITES; SR;

D O I：

10.1016/j.physleta.2015.02.016

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Colossal Magneto Resistance (CMR) materials with the compositional formula, La0.67-xEu5Sr033Mn03 (where x = 0.3, 0.33, 0.36 and 0.39) were prepared by the sol-gel method. After characterizing the samples structurally, a systematic investigation of magnetization has been undertaken, over a temperature range 70-300 K under 0.05 T magnetic field. An effort has been made to calculate the magnetocaloric behavior of all the samples theoretically using the experimental magnetization data. Magnetocaloric effect parameters such as maximum entropy change, full width at half-maximum and relative cooling power under 0.05 T were computed. The observed behavior has been explained qualitatively. C) 2015 Elsevier B.V. All rights reserved.

引用

页码：1178 / 1182

页数：5

共 21 条

[1]

Amaral J. S., 2005, MAT SCI FORUM

[2] Crystallographic orientation and the magnetocaloric effect in MnP [J].

Booth, R. A. ;

Majetich, S. A. .

JOURNAL OF APPLIED PHYSICS, 2009, 105 (07)

[3] Developments in magnetocaloric refrigeration [J].

Brück, E .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2005, 38 (23) :R381-R391

[4] Magnetic phase transitions and the magnetothermal properties of gadolinium [J].

Dan'kov, SY ;

Tishin, AM ;

Pecharsky, VK ;

Gschneidner, KA .

PHYSICAL REVIEW B, 1998, 57 (06) :3478-3490

[5] Recent developments in magnetocaloric materials [J].

Gschneidner, KA ;

Pecharsky, VK ;

Tsokol, AO .

REPORTS ON PROGRESS IN PHYSICS, 2005, 68 (06) :1479-1539

[6] Magnetocaloric effect in La0.65-xEuxSr0.35MnO3 [J].

Hamad, Mahmoud A. .

PHASE TRANSITIONS, 2014, 87 (05) :460-467

[7] Magnetocaloric effect in RMnO3 (R = Gd, Tb and Dy) multiferroics [J].

Kumar, N. Pavan ;

Reddy, P. Venugopal .

MATERIALS LETTERS, 2014, 122 :292-295

[8] Magnetic, transport and 151Eu Mossbauer studies on partially doped La1-xEuxSr0.2MnO3 (0.04≤x≤ 0.32) compounds [J].

Kumar, Rakesh ;

Rana, D. S. ;

Tomy, C. V. ;

Paulose, P. L. ;

Malik, S. K. .

PHYSICA B-CONDENSED MATTER, 2006, 378-80 :507-509

[9] Magnetocaloric properties in the Eu-doped La0.65Sr0.35MnO3 systems [J].

Li, Hai-Bo ;

Feng, Ming ;

Li, Na ;

Zhang, Xiao-Fen ;

Zheng, Wei-Tao .

MATERIALS CHEMISTRY AND PHYSICS, 2008, 107 (2-3) :377-380

[10] Magnetocaloric Effect in Different Impurity Doped La0.67Ca0.33MnO3 Composite [J].

M'nassri, R. ;

Cheikhrouhou, A. .

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2014, 27 (02) :421-425

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