Effect of noncollinear spin structure on magnetic entropy change and its field dependence in Fe90Sc10 amorphous alloy

2010 ◽  
Vol 97 (2) ◽  
pp. 022503 ◽  
Author(s):  
Yanyan Wang ◽  
Xiaofang Bi
Keyword(s):  
Amorphous Alloy ◽  
Field Dependence ◽  
Spin Structure ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy

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

scholarly journals Investigation of the critical behavior in Mn0.94Nb0.06CoGe alloy by using the field dependence of magnetic entropy change

2013 ◽  
Vol 113 (9) ◽  
pp. 093902 ◽  
Author(s):  
J. C. Debnath ◽  
P. Shamba ◽  
A. M. Strydom ◽  
J. L. Wang ◽  
S. X. Dou
Keyword(s):  
Field Dependence ◽  
Critical Behavior ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy

Field dependence of magnetic entropy change and estimation of spontaneous magnetization in Cd substituted MnCoGe

2018 ◽  
Vol 143 ◽  
pp. 306-317 ◽  
Author(s):  
Xiaodong Si ◽  
Yulong Shen ◽  
Xinxiu Ma ◽  
Shijie Chen ◽  
Jia Lin ◽  
...  
Keyword(s):  
Field Dependence ◽  
Magnetic Entropy Change ◽  
Spontaneous Magnetization ◽  
Entropy Change ◽  
Magnetic Entropy

Field dependence of magnetic entropy change: Whence comes an intercept?

2009 ◽  
Vol 321 (1) ◽  
pp. L1-L3 ◽  
Author(s):  
Michael D. Kuz’min ◽  
Manuel Richter ◽  
Alexander M. Tishin
Keyword(s):  
Field Dependence ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy

scholarly journals Observation of a Broadened Magnetocaloric Effect in Partially Crystallized Gd60Co40 Amorphous Alloy

Metals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1741
Author(s):  
Ping Han ◽  
Ziyang Zhang ◽  
Jia Tan ◽  
Xue Zhang ◽  
Yafang Xu ◽  
...  
Keyword(s):  
Amorphous Alloy ◽  
Magnetocaloric Effect ◽  
Magnetic Entropy Change ◽  
Amorphous Matrix ◽  
Thermodynamic Cycle ◽  
Entropy Change ◽  
Cooling Power ◽  
Magnetic Entropy ◽  
Amorphous Precursor ◽  
Space Group

To investigate the effect of crystallization treatment on the structure and magnetocaloric effect of Gd60Co40 amorphous alloy, the melt-spun ribbons were annealed at 513 K isothermally for 20, 40 and 60 min. The results indicate that, with increasing annealing time, the Gd4Co3 (space group P63/m) and Gd12Co7 (space group P21/c) phases precipitated from the amorphous precursor in sequence. In particular, in the samples annealed for 40 and 60 min, three successive magnetic transitions corresponding to the phases of Gd4Co3, Gd12Co7 and remaining amorphous matrix were detected, which induced an overlapped broadened profile of magnetic entropy change (|ΔSM|) versus temperature. Under magnetic field changing from 0 to 5 T, |ΔSM| values of 6.65 ± 0.1 kg−1·K−1 and 6.44 ± 0.1 J kg−1·K−1 in the temperature spans of 180–196 K and 177–196 K were obtained in ribbons annealed for 40 and 60 min, respectively. Compared with the fully amorphous alloy, the enhanced relative cooling power and flattened magnetocaloric effect of partially crystallized composites making them more suitable for the Ericsson thermodynamic cycle.

Achieving better glass-forming ability and magnetocaloric effect in the minor Zr-substituted Gd50Co50 amorphous alloy

2018 ◽  
Vol 32 (08) ◽  
pp. 1850085
Author(s):  
Li Yan Ma ◽  
Liang Hua Gan ◽  
Lei Xia ◽  
JiaZheng Zhang ◽  
Ding Ding
Keyword(s):  
Amorphous Alloy ◽  
Magnetocaloric Effect ◽  
Melt Spinning ◽  
Magnetic Entropy Change ◽  
Thermodynamic Cycle ◽  
Entropy Change ◽  
Glass Forming Ability ◽  
Magnetic Entropy ◽  
Glass Forming ◽  
Amorphous Ribbons

The glass-forming ability (GFA) and magnetic properties of the minor Zr-substituted Gd[Formula: see text]Co[Formula: see text] amorphous alloy were investigated. The Gd[Formula: see text]Co[Formula: see text]Zr2 amorphous ribbons prepared by melt-spinning show better GFA. With increasing minor Zr addition, the Gd[Formula: see text]Co[Formula: see text]Zr2 amorphous ribbons possessed higher magnetic entropy change peak ([Formula: see text]S[Formula: see text] = 3.9 Jkg[Formula: see text]K[Formula: see text], under 5 T) but lower Curie temperature (T[Formula: see text] = 231 K) than the Gd[Formula: see text]Co[Formula: see text] amorphous alloy. The mechanism for the improved GFA, magnetocaloric effect (MCE) and the decrease in T[Formula: see text] was investigated. Finally, combined with other Gd-based amorphous ribbons, the Gd[Formula: see text]Co[Formula: see text]Zr2 amorphous alloy was employed to construct amorphous composites to achieve a table-like magnetic entropy change profile, which can provide optimal efficiency when utilizing an Ericsson thermodynamic cycle.

Magnetic field dependence of the maximum magnetic entropy change

2011 ◽  
Vol 83 (1) ◽  
Author(s):  
Julia Lyubina ◽  
Michael D. Kuz’min ◽  
Konstantin Nenkov ◽  
Oliver Gutfleisch ◽  
Manuel Richter ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Magnetic Field Dependence ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Magnetic Entropy
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