Effect of Bi doping on the crystal structure, magnetic and magnetocaloric properties of La0.7-Bi Sr0.15Ca0.15MnO3 (x = 0, 0.05, 0.10, 0.15) manganites

Author(s):  
Lilin Liu ◽  
Zhengguang Zou ◽  
Bangrong He ◽  
Zheng Mao ◽  
Zhuojia Xie
Author(s):  
G. A. Govor ◽  
A. O. Larin ◽  
V. I. Mitsiuk ◽  
G. S. Rimskiy ◽  
T. M. Tkachenkа

The Stockbargard – Bridgman method yielded single crystals Mn0.99Fe0.01As. The effect of an external magnetic field with an intensity of up to 10 T on phase transitions in the single crystal Mn0.99Fe0.01As is studied. It is established that the magnetostructural phase transition in Mn0.99Fe0.01As is accompanied by a change in the entropy ΔSm, which is due to the transformation of the crystal structure. At temperatures above the temperature of the magnetostructural transition Tu = 290 K, the existence of an unstable magnetic structure is obtained. The magnetocaloric characteristics of the material under study are determined by an indirect calculation method based on the Maxwell thermodynamic relations and the Clapeyron – Clausius equation.


2020 ◽  
Vol 135 (6) ◽  
Author(s):  
Wei Wang ◽  
Xucai Kan ◽  
Xiansong Liu ◽  
Zhuhongbo Cheng ◽  
Chaocheng Liu ◽  
...  

Author(s):  
Weining Wu ◽  
Wei He ◽  
Tonghan Yang ◽  
Yifei Bi ◽  
Kaiwen Zhou ◽  
...  

2011 ◽  
Vol 299-300 ◽  
pp. 520-524 ◽  
Author(s):  
Jian Huang ◽  
Jie Xiang ◽  
Ce Zhi ◽  
Xue Zhen Wang ◽  
Xue Ling Hou

The crystal structure, microstructure, Curie temperature and magnetocaloric properties of (Mn1-xFex)5Sn3 (x=0.1~0.5) alloys were studied in this paper. The alloys were prepared by powder metallurgy method with magnetic pressing and magnetic sintering. All samples crystallize in the hexagonal InNi2-type structure with space group P63/mmc. The lattice parameter, cell volumes of the (Mn1-xFex)5Sn3 decrease with increasing x, while the Curie temperature of these alloys increases almost linearly with increasing x. All samples exhibit a moderate magnetocaloric effect, and the curves of magnetic entropy change are flat in a wide temperature range, which is suitable for the Ericsson cycle.


2019 ◽  
Vol 471 ◽  
pp. 411-415 ◽  
Author(s):  
H. Qian ◽  
R. Pahari ◽  
K. Schroeder ◽  
S. Valloppilly ◽  
Y. Huh ◽  
...  

2017 ◽  
Vol 4 (10) ◽  
pp. 106105
Author(s):  
D Wang ◽  
L Ma ◽  
G H Rao ◽  
J Wang ◽  
X Zhang ◽  
...  

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