Effect of microstrain on the magnetism and magnetocaloric properties of MnAs0.97P0.03
Effect of microstrain on the magnetism and magnetocaloric properties of MnAs0.97P0.03
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微应变对MnAs0.97P0.03磁性和磁热性能的影响
DOI:
10.1063/1.3695039
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发表时间:
2012-03
影响因子:
4
通讯作者:
F Liu
中科院分区:
文献类型:
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作者:
YB Gao;ZQ Cai;司平占;BS Du;NK Sun;SN Xu;F Liu
In the compound MnAs0.97P0.03, prepared by mechanical milling, a large microstrain of 0.68%, calculated by quantitative x-ray diffraction analysis, induces a recoverable helimagnetic state at low temperatures and suppresses the temperature/field-induced orthorhombic-hexagonal phase transition. This leads to a remarkable reduction of both the thermal and the magnetic hysteresis at the Curie temperature, TC. Around the helimagnetic-ferromagnetic transition temperature and at TC, a large inverse magnetocaloric effect (MCE) with magnetic entropy change ΔSm of 5.6 J/kg K at 208 K and a normal MCE with ΔSm of −4.4 J/kg K at 253 K for a 5 T field change are observed. After annealing, MnAs0.97P0.03 exhibits a large MCE near room temperature with ΔSm of ∼14 J/kg K for a field change from 0 to 5 T.
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影响因子:
4
作者:
Wada, H;Tanabe, Y
通讯作者:
Tanabe, Y
影响因子:
4
作者:
N. Sun;W. Cui;Li Duoli;D. Geng;F. Yang;Zhidong Zhang
通讯作者:
N. Sun;W. Cui;Li Duoli;D. Geng;F. Yang;Zhidong Zhang
影响因子:
2.7
作者:
H. Fjellvåg;A. Andresen;K. Bärner
通讯作者:
H. Fjellvåg;A. Andresen;K. Bärner
影响因子:
64.8
作者:
Tegus, O;Brück, E;de Boer, FR
通讯作者:
de Boer, FR
影响因子:
3.2
作者:
通讯作者:
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