Tailoring the magnetostructural transition and magnetocaloric properties around room temperature: In-doped Ni-Mn-Ga alloys

2014 ◽  
Vol 105 (11) ◽  
pp. 112402 ◽  
Author(s):  
Linfang Zhang ◽  
Jingmin Wang ◽  
Hui Hua ◽  
Chengbao Jiang ◽  
Huibin Xu
Keyword(s):  
Room Temperature ◽  
Magnetostructural Transition ◽  
Magnetocaloric Properties

Room temperature magnetocaloric properties of Ni substituted La0.67Sr0.33MnO3

2013 ◽  
Vol 19 ◽  
pp. 130-135 ◽  
Author(s):  
C.P. Reshmi ◽  
S. Savitha Pillai ◽  
K.G. Suresh ◽  
Manoj Raama Varma
Keyword(s):  
Room Temperature ◽  
Magnetocaloric Properties

Enhancement of magnetocaloric properties near room temperature in Ga-doped Ni50Mn34.5In15.5 Heusler-type alloy

2012 ◽  
Vol 111 (10) ◽  
pp. 103902 ◽  
Author(s):  
A. Y. Takeuchi ◽  
C. E. Guimarães ◽  
E. C. Passamani ◽  
C. Larica
Keyword(s):  
Room Temperature ◽  
Type Alloy ◽  
Magnetocaloric Properties

The magnetostructural transition and magnetocaloric properties in Fe0.6Mn0.4NiSi1−xAlx alloys

2020 ◽  
Vol 128 (1) ◽  
pp. 013904
Author(s):  
L. Lei ◽  
Z. G. Zheng ◽  
S. Jin ◽  
W. H. Wang ◽  
C. F. Li ◽  
...  
Keyword(s):  
Magnetostructural Transition ◽  
Magnetocaloric Properties

Near-room-temperature magnetocaloric properties of La1−xSrxMnO3 (x = 0.11, 0.17, and 0.19) nanoparticles

2018 ◽  
Vol 5 (10) ◽  
pp. 106103 ◽  
Author(s):  
Bishnu R Dahal ◽  
Kyle Schroeder ◽  
Megan M Allyn ◽  
Ronald J Tackett ◽  
Yung Huh ◽  
...  
Keyword(s):  
Room Temperature ◽  
Magnetocaloric Properties

scholarly journals Magnetocaloric Properties of (MnFeRu)2(PSi) as Magnetic Refrigerants near Room Temperature

2017 ◽  
Vol 3 (1) ◽  
pp. 6 ◽  
Author(s):  
Takayuki Ohnishi ◽  
Kei Soejima ◽  
Keiichiro Yamashita ◽  
Hirofumi Wada
Keyword(s):  
Room Temperature ◽  
Magnetocaloric Properties

scholarly journals The Effect of Fe Doping on the Magnetic and Magnetocaloric Properties of Mn5−xFexGe3

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Jeffrey Brock ◽  
Nathanael Bell-Pactat ◽  
Hong Cai ◽  
Timothy Dennison ◽  
Tucker Fox ◽  
...  
Keyword(s):  
Phase Transition ◽  
Order Phase Transition ◽  
Room Temperature ◽  
Entropy Change ◽  
Second Order ◽  
Ferromagnetic Transition ◽  
Fe Doping ◽  
First Order Phase Transition ◽  
Magnetocaloric Properties ◽  
First Order Phase

The magnetic and magnetocaloric properties of a series of minutely doped Mn5-xFexGe3 compounds that exhibit the D88-type hexagonal crystal structure at room temperature have been investigated. For all Fe concentrations, the alloys are ferromagnetic and undergo a second-order ferromagnetic-to-paramagnetic transition near room temperature. Although the small Fe doping had little effect on the ferromagnetic transition temperatures of the system, changes in the saturation magnetization and magnetic anisotropy were observed. For x≤0.15, all compounds exhibit nearly the same magnetic entropy change of ~7 J/kg K, for a field change of 50 kOe. However, the magnitude of the refrigerant capacities increased with Fe doping, with values up to 108.5 J/kg and 312 J/kg being observed for field changes of 20 kOe and 50 kOe, respectively. As second-order phase transition materials, the Mn5-xFexGe3 compounds are not subject to the various drawbacks associated with first-order phase transition materials yet exhibit favorable magnetocaloric effects.

Magnetocaloric Properties Desired for Magnetic Refrigeration System near Room Temperature

2011 ◽  
Vol 1310 ◽  
Author(s):  
H. Wada
Keyword(s):  
Room Temperature ◽  
Composite Layer ◽  
Cooling Capacity ◽  
Magnetic Refrigeration ◽  
Experimental Results ◽  
Refrigeration System ◽  
Layer Material ◽  
Magnetic Refrigerant ◽  
Magnetocaloric Properties

ABSTRACTIn order to realize the magnetic refrigeration system, it is necessary to develop a 100 W class refrigerator with COP > 7.5. This requires us to find new magnetic refrigerant materials, of which cooling capacity is 2.5 times higher than that of Gd. In this paper, first we discuss the cooling capacity of magnetic refrigerant materials to achieve COP = 7.5. Then, we compare the experimental results of MnAsSb, MnFe(PGe) and La(FeCoSi)13 compounds with the calculated cooling capacity. It is suggested that a composite layer material of MnFe(PGe) would show excellent cooling capacity in the temperature span of 20 K.

Sign in / Sign up

Export Citation Format

Share Document