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.

MAGNETIC PHASE TRANSITIONS IN Ce(Fe1–xCox)2 SYSTEM

1993 ◽  
Vol 07 (01n03) ◽  
pp. 822-825 ◽  
Author(s):  
NAUSHAD ALI ◽  
XIANFENG ZHANG
Keyword(s):  
Phase Transitions ◽  
Magnetic Phase ◽  
Ac Susceptibility ◽  
Magnetic Phase Diagram ◽  
Ferromagnetic State ◽  
Magnetic Phase Transitions ◽  
Itinerant Electron ◽  
Electron Systems ◽  
First Order ◽  
First Order Transition

Re-entrant magnetic phase transitions in Ce(Fe1–xMx)2 systems (where M=Al, Ru, Co, etc.) are being investigated by various research groups. It has been observed that the system goes from a paramagnetic to ferromagnetic state followed by an almost complete loss of magnetization as the temperature is lowered. We have done systematic experimental measurements of magnetization, ac susceptibility, electrical resistivity, and thermal expansion on the Ce(Fe1–xCox)2 system. It is found that as the temperature is decreased, the system goes from para- to ferro- to antiferro-magnetic phase. The ferro- to antiferro-magnetic phase transition is a first order transition. Our experimental results are consistent with the magnetic phase diagram predictions by Moriya and Usami's theory of strongly interacting itinerant electron systems.

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

Strain-driven magnetic phase transitions from an antiferromagnetic to a ferromagnetic state in perovskite RMnO3 films

2018 ◽  
Vol 98 (19) ◽  
Author(s):  
Junting Zhang ◽  
Chao Ji ◽  
Yanyan Shangguan ◽  
Bixiang Guo ◽  
Jianli Wang ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Magnetic Phase ◽  
Ferromagnetic State ◽  
Magnetic Phase Transitions

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

Clusterization Phenomena and Magnetic Phase Transitions in Rare Earth Intermetallics

2011 ◽  
Vol 170 ◽  
pp. 270-275 ◽  
Author(s):  
D.P. Rojas ◽  
N. Marcano ◽  
J.C. Gómez Sal
Keyword(s):  
Rare Earth ◽  
Phase Transitions ◽  
Magnetic Phase ◽  
Ferromagnetic State ◽  
Magnetic Phase Transitions ◽  
Ferromagnetic Transition ◽  
Long Range Order ◽  
Percolation Process ◽  
Magnetic Cluster ◽  
First Order

Two cases of anomalous phase transitions in Ce intermetallics are presented. In CeIn2 multiple signatures of a first order paramagnetic-ferromagnetic transition at 22 K have been experimentally detected. We discuss possible mechanisms for such behaviour and the new studies in the La1-xCexIn2 series. In the he case of CeNi1-xCux the low temperature ferromagnetic long range order appears owing to a magnetic cluster percolation process, from a cluster glass state established above the ferromagnetic state.

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