Magnetocaloric and Colossal Magnetoresistance Effect in Layered Perovskite La1.4Sr1.6Mn2O7

被引：33
作者：
Han, Li'an [1 ,2 ]
Chen, Changle [1 ]
机构：
[1] Northwestern Polytech Univ, Sch Sci, Xian 710072, Peoples R China
[2] Xian Univ Sci & Technol, Dept Appl Phys, Xian 710054, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2010年 / 26卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Magnetocaloric effect; Layered perovskite; Colossal magnetoresistance; GIANT MAGNETORESISTANCE; MANGANITES; RESISTIVITY;
D O I：
10.1016/S1005-0302(10)60039-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetocaloric and colossal magnetoresistance effects of the layered perovskite La1.4Sr1.6Mn2O7 compound have been studied. A broad peak of magnetic entropy change (-Delta S-M) is found above the Curie temperature (T-C=120 K), which can be associated with the existence of two-dimensional short range ferromagnetic order. Additionally, the curvilinear shape of -Delta S-M for layered perovskite is quite different from that of the Ln(1-x)A(x)MnO(3) probably arising from magnetocrystalline anisotropy. At the same time, a wide peak of colossal magnetoresitance effect near T-C is found in the layered provskite La1.4Sr1.6Mn2O7.
引用
收藏
页码：234 / 236
页数：3
相关论文
共 21 条
[1]   Magnetic properties of electron-irradiated quasi-layered manganites La2-2xSr1+2xMn2O7 (x=0.3, 0.35, 0.4) [J].
Arbuzova, TI ;
Naumov, SV ;
Arbuzov, VL .
PHYSICS OF THE SOLID STATE, 2003, 45 (08) :1513-1518
[2]   Giant magnetoresistance of a two-dimensional ferromagnet La2-2xCa1+2xMn2O7 [J].
Asano, H ;
Hayakawa, J ;
Matsui, M .
APPLIED PHYSICS LETTERS, 1996, 68 (25) :3638-3640
[3]   Magnetic and calorimetric measurements on the magnetocaloric effect in La0.6Ca0.4MnO3 [J].
Bohigas, X ;
Tejada, J ;
Marínez-Sarrión, ML ;
Tripp, S ;
Black, R .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2000, 208 (1-2) :85-92
[4]   Magnetocaloric properties of the La0.7-xYxSr0.3MnO3 giant magnetoresistance ceramics [J].
Bose, TK ;
Chahine, R ;
Gopal, BR ;
Foldeaki, M ;
Barman, A ;
Gosh, M ;
De, SK ;
Chatterjee, S .
CRYOGENICS, 1998, 38 (08) :849-851
[5]  
Chen P, 2001, CHINESE J PHYS, V39, P357
[6]   Mixed-valence manganites [J].
Coey, JMD ;
Viret, M ;
von Molnár, S .
ADVANCES IN PHYSICS, 1999, 48 (02) :167-293
[7]   Colossal magnetoresistant materials: The key role of phase separation [J].
Dagotto, E ;
Hotta, T ;
Moreo, A .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2001, 344 (1-3) :1-153
[8]   Large magnetic entropy change in perovskite-type manganese oxides [J].
Guo, ZB ;
Du, YW ;
Zhu, JS ;
Huang, H ;
Ding, WP ;
Feng, D .
PHYSICAL REVIEW LETTERS, 1997, 78 (06) :1142-1145
[9]   Effect of Al doping on the magnetic and electrical properties of layered perovskite La1.3Sr1.7Mn2-xAlxO7 [J].
Han, L. A. ;
Chen, C. L. ;
Dong, H. Y. ;
Wang, J. Y. ;
Gao, G. M. .
PHYSICA B-CONDENSED MATTER, 2008, 403 (17) :2614-2617
[10]   Spin dynamical properties and orbital states of the layered perovskite La2-2xSr1+2xMn2O7 (0.3<x0.5) -: art. no. 064414 [J].
Hirota, K ;
Ishihara, S ;
Fujioka, H ;
Kubota, M ;
Yoshizawa, H ;
Moritomo, Y ;
Endoh, Y ;
Maekawa, S .
PHYSICAL REVIEW B, 2002, 65 (06) :1-10
123