Magnetocaloric effect in La0.7Sr0.3MnO3/Ta2O5 composites

被引：39
作者：
Hamad, Mahmoud Aly [1 ,2 ]
机构：
[1] Al Jouf Univ, Coll Sci, Dept Phys, POB 2014, Al Jouf, Skaka, Saudi Arabia
[2] Tanta Univ, Fac Sci, Dept Phys, Tanta, Egypt
来源：
JOURNAL OF ADVANCED CERAMICS | 2013年 / 2卷 / 03期
关键词：
magnetic materials; simulation and modeling; MAGNETIC ENTROPY CHANGE; PHASE-TRANSITION; LA1-XCAXMNO3;
D O I：
10.1007/s40145-013-0062-0
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The magnetocaloric effect (MCE) achieved for La0.7Sr0.3MnO3/Ta2O5 composites has been investigated. The maximum value of magnetic entropy change of La0.7Sr0.3MnO3 composites is found to decrease slightly with the further increasing of Ta2O5 concentration. It is shown that La0.7Sr0.3MnO3/Ta2O5 composites exhibit much more uniform magnetic entropy change than that of gadolinium. Moreover, the results indicate that the temperature range between 100 K and 400 K can be covered using the La0.7Sr0.3MnO3/Ta2O5 composites. Therefore, MCE makes the composites promising for room-temperature magnetic cooling applications.
引用
收藏
页码：213 / 217
页数：5
相关论文
共 32 条
[1]   A STRUCTURAL PHASE-TRANSITION INDUCED BY AN EXTERNAL MAGNETIC-FIELD [J].
ASAMITSU, A ;
MORITOMO, Y ;
TOMIOKA, Y ;
ARIMA, T ;
TOKURA, Y .
NATURE, 1995, 373 (6513) :407-409
[2]   Tunable magnetocaloric effect in ceramic perovskites [J].
Bohigas, X ;
Tejada, J ;
del Barco, E ;
Zhang, XX ;
Sales, M .
APPLIED PHYSICS LETTERS, 1998, 73 (03) :390-392
[3]   THEORY OF THE ROLE OF COVALENCE IN THE PEROVSKITE-TYPE MANGANITES [LA,M(II)]MNO3 [J].
GOODENOUGH, JB .
PHYSICAL REVIEW, 1955, 100 (02) :564-573
[4]   Recent developments in magnetocaloric materials [J].
Gschneidner, KA ;
Pecharsky, VK ;
Tsokol, AO .
REPORTS ON PROGRESS IN PHYSICS, 2005, 68 (06) :1479-1539
[5]   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
[6]   Magnetocaloric Effect in La1-x Cd x MnO3 [J].
Hamad, Mahmoud A. .
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2013, 26 (12) :3459-3462
[7]   Investigations on electrocaloric properties of ferroelectric Pb(Mg0.067Nb0.133Zr0.8)O3 [J].
Hamad, Mahmoud A. .
APPLIED PHYSICS LETTERS, 2013, 102 (14)
[8]   Room temperature giant electrocaloric properties of relaxor ferroelectric 0.93PMN-0.07PT thin film [J].
Hamad, Mahmoud A. .
AIP ADVANCES, 2013, 3 (03)
[9]   Magnetocaloric Effect of Perovskite Manganites Ce0.67Sr0.33MnO3 [J].
Hamad, Mahmoud Aly .
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2013, 26 (09) :2981-2984
[10]   Giant electrocaloric effect of highly (100)-oriented 0.68PbMg1/3Nb2/3O3-0.32PbTiO3 thin film [J].
Hamad, Mahmoud Aly .
PHILOSOPHICAL MAGAZINE LETTERS, 2013, 93 (06) :346-355
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