Large magnetic entropy change and magnetoresistance associated with a martensitic transition of Mn-rich Mn50.5−xNi41Sn8.5+xalloys

2013 ◽  
Vol 46 (43) ◽  
pp. 435001 ◽  
Author(s):  
Arup Ghosh ◽  
Kalyan Mandal
Keyword(s):  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Martensitic Transition ◽  
Magnetic Entropy

Effect of Al doping on the martensitic transition and magnetic entropy change in Ni–Mn–Sn alloys

2011 ◽  
Vol 151 (17) ◽  
pp. 1196-1199 ◽  
Author(s):  
R.L. Wang ◽  
J.B. Yan ◽  
L.S. Xu ◽  
V.V. Marchenkov ◽  
S.S. Chen ◽  
...  
Keyword(s):  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Martensitic Transition ◽  
Magnetic Entropy ◽  
Al Doping

Effect of Fe on the Martensitic Transition, Magnetic and Magnetocaloric Properties in Ni-Mn-In Melt-spun Ribbons

2016 ◽  
Vol 66 (4) ◽  
pp. 403 ◽  
Author(s):  
D.M. Raj kumar ◽  
N.V. Rama Rao ◽  
S. Esakki Muthu ◽  
S. Arumugam ◽  
M. Manivel Raja ◽  
...  
Keyword(s):  
Room Temperature ◽  
Magnetic Entropy Change ◽  
Thermal Hysteresis ◽  
Entropy Change ◽  
Austenite Phase ◽  
High Magnetic Fields ◽  
Martensitic Transition ◽  
Magnetic Entropy ◽  
Fe Content ◽  
Magnetocaloric Properties

The effect of Fe on the martensitic transitions, magnetic and inverse magnetocaloric effect in Ni47Mn40-xFexIn13 ribbons (x = 1, 2, 3 and 5) has been investigated. All the ribbon compositions under study have shown the presence of austenite phase at room temperature. The variation of martensitic transition with the increase in Fe-content is non-monotonic. The thermal hysteresis of the martensitic transition increased with the increase in Fe-content. The martensitic transitions shifted to lower temperatures in the presence of high magnetic fields. A maximum magnetic entropy change (∆SM) of 50 Jkg-1K-1 has been achieved in the Ni47Mn38Fe2In13 (x = 1) ribbon at 282 K for an applied field of 5 T.

Magnetic Entropy Changes in Ni54.9Mn20.5Ga24.6 Alloy

2005 ◽  
Vol 475-479 ◽  
pp. 2243-2246
Author(s):  
Da Wen ◽  
Ze Yu Zhang ◽  
Yi Long ◽  
Rong Chang Ye ◽  
Zhuhong Liu ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Martensitic Transition ◽  
Martensitic Structure ◽  
Magnetic Entropy ◽  
Structure Transition ◽  
Martensitic State ◽  
Giant Magnetocaloric Effect ◽  
First Order Phase

Giant magnetocaloric effect based on first order phase transformation has been investigated extensively recently. A considerable magnetic entropy change has been found in single crystal Ni52.6Mn23.1Ga24.3, Ni53Mn22Ga25 and polycrystal Ni51.5Mn22.7Ga25.8.This change originated from a sharp magnetization jump caused by the martensitic-austenitic structure transition on heating. In this paper, magnetocaloric effect in the alloys Ni54.9Mn20.5Ga24.6 is studied. The Curie point temperature Tc of the alloy is adjusted to the vicinity of martensitic transition temperature Tm. The concurrence of martensitic structure transition and magnetic phase transition enhance the magnetocaloric effect in these alloys. The martensitic structure transition effect on the magnetic properties of the alloys is investigated. The character of magnetocaloric effect during the transition from the austenitic to martensitic state is discussed.

Investigation of critical behavior in Pr0.55Sr0.45MnO3 by using the field dependence of magnetic entropy change

2011 ◽  
Vol 98 (7) ◽  
pp. 072508 ◽  
Author(s):  
Jiyu Fan ◽  
Li Pi ◽  
Lei Zhang ◽  
Wei Tong ◽  
Langsheng Ling ◽  
...  
Keyword(s):  
Field Dependence ◽  
Critical Behavior ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy

The Sintering Effect of Magnetic Entropy Change on ${\rm Ba}_{2}{\rm FeMoO}_{6}$

2011 ◽  
Vol 47 (10) ◽  
pp. 2474-2477 ◽  
Author(s):  
K. S. Kim ◽  
M. S. Lee ◽  
S. C. Yu ◽  
B. W. Lee ◽  
B. S. Kang
Keyword(s):  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy ◽  
Sintering Effect

Large magnetic entropy change at cryogenic temperature in rare earth HoN nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (79) ◽  
pp. 75562-75569 ◽  
Author(s):  
K. P. Shinde ◽  
S. H. Jang ◽  
M. Ranot ◽  
B. B. Sinha ◽  
J. W. Kim ◽  
...  
Keyword(s):  
Rare Earth ◽  
Low Temperature ◽  
Magnetocaloric Effect ◽  
Cryogenic Temperature ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Environmental Problems ◽  
Magnetic Refrigeration ◽  
Magnetic Entropy ◽  
Alternative Technology

The most extensive cooling techniques based on gases have faced environmental problems. The magnetic refrigeration is an alternative technology based on magnetocaloric effect. HoN nanoparticles are good refrigerant material at low temperature.

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