Large magnetic entropy change in compound LaFe/sub 11.44/Al/sub 1.56/ with two magnetic phase transitions

2001 ◽  
Vol 37 (4) ◽  
pp. 2328-2330 ◽  
Author(s):  
Feng-Xia Hu ◽  
Bao-Gen Shen ◽  
Ji-Rong Sun ◽  
A.B. Pakhomov ◽  
C.Y. Wong ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Magnetic Entropy Change ◽  
Magnetic Phase ◽  
Entropy Change ◽  
Magnetic Phase Transitions ◽  
Magnetic Entropy

Magnetic Phase Transitions and Magnetocaloric Properties of Gd5Si0.4In3.6 Compound

2013 ◽  
Vol 320 ◽  
pp. 67-71
Author(s):  
Chao Jing ◽  
X.L. Wang ◽  
D.H. Yu ◽  
Y.J. Yang ◽  
B.J. Kang ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Magnetic Entropy Change ◽  
Magnetic Phase ◽  
Entropy Change ◽  
Ferromagnetic State ◽  
Order Transition ◽  
Magnetic Phase Transitions ◽  
Magnetocaloric Properties ◽  
Second Order Transition ◽  
First Order Transition

The magnetic phase transitions and magnetocaloric properties of Gd5Si0.4In3.6 compound have been investigated. Magnetothermal measurements performed at different conditions reveal that the sample undergoes two magnetic phase transitions. One is a second-order transition from paramagnetic to ferromagnetic state at about 197 K, the other is a first-order transition when the temperature is reduced to 75 K. The magnetocaloric effect around Curie temperature (TC) was calculated in terms of isothermal magnetic entropy change by using Maxwells equation,which remains over a quite wide temperature span of 70 K between the temperature region from160 to 240 K, and thus makes this material attractive for magnetic refrigerator applications.

scholarly journals Universal behavior for magnetic entropy change in magnetocaloric materials: An analysis on the nature of phase transitions

2010 ◽  
Vol 81 (22) ◽  
Author(s):  
Claudia Marcela Bonilla ◽  
Julia Herrero-Albillos ◽  
Fernando Bartolomé ◽  
Luis Miguel García ◽  
María Parra-Borderías ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy ◽  
Universal Behavior ◽  
Magnetocaloric Materials

scholarly journals Large entropy change accompanying two successive magnetic phase transitions in TbMn2Si2 for magnetic refrigeration

2015 ◽  
Vol 106 (18) ◽  
pp. 182405 ◽  
Author(s):  
Guoxing Li ◽  
Jianli Wang ◽  
Zhenxiang Cheng ◽  
Qingyong Ren ◽  
Chunsheng Fang ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Magnetic Phase ◽  
Entropy Change ◽  
Magnetic Refrigeration ◽  
Magnetic Phase Transitions

Magnetic phase transition and giant anisotropic magnetic entropy change in TbFeO3 single crystal

2016 ◽  
Vol 119 (6) ◽  
pp. 063904 ◽  
Author(s):  
Yiming Cao ◽  
Maolin Xiang ◽  
Weiyao Zhao ◽  
Guohua Wang ◽  
Zhenjie Feng ◽  
...  
Keyword(s):  
Phase Transition ◽  
Single Crystal ◽  
Magnetic Phase Transition ◽  
Magnetic Entropy Change ◽  
Magnetic Phase ◽  
Entropy Change ◽  
Magnetic Entropy

scholarly journals Magnetic Properties and Magnetocaloric Effect in Selected MM’X-Type (M, M’ = 3d or 4d Metal, X = As, P, Ge) and Mn1-xTxAs-Type (T = 3d Metal) Intermetallics

2011 ◽  
Vol 170 ◽  
pp. 180-184 ◽  
Author(s):  
Ryszard Zach ◽  
Wiesław Chajec ◽  
Janusz Toboła ◽  
Daniel Fruchart ◽  
El Kebir Hlil ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Phase Transitions ◽  
Band Structure ◽  
Magnetocaloric Effect ◽  
Solid Solutions ◽  
Magnetic Entropy Change ◽  
Electronic Band Structure ◽  
Entropy Change ◽  
Magnetic Entropy ◽  
Electronic Band

In this report a review of magnetic properties of two groups of intermetallic compounds in relation with their magnetocaloric effect properties is presented. A first group of materials concerns the MM’X type (M, M’-metal 3d or 4d, X = As, P, Ge) of compounds. In this group the MnRh1-xCoxAs and MnFe1-xCoxP series of solid solutions are investigated. In a second group of materials, the Mn1-xTxAs (T = Cr, V, Ti, (Ti0.5V0.5) ) series of compounds are analyzed. In this case a special attention is paid for high dc field magnetization measurements and for selected compounds. As a summary the magnetic entropy change vs. M, M’ or T transition metal concentration for F-P phase transitions will be shown. Furthermore results of KKR-CPA electronic band structure computations in relation to magnetic properties are discussed.

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