scholarly journals Study on the magnetic entropy change and magnetic phase transition of NaZn13-type LaFe13－xAlxCy compounds

2006 ◽  
Vol 55 (10) ◽  
pp. 5506
Author(s):  
Zhang Li-Gang ◽  
Chen Jing ◽  
Zhu Bo-Quan ◽  
Li Ya-Wei ◽  
Wang Ru-Wu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Magnetic Phase Transition ◽  
Magnetic Entropy Change ◽  
Magnetic Phase ◽  
Entropy Change ◽  
Magnetic Entropy

Magnetic phase transition and giant anisotropic magnetic entropy change in TbFeO3 single crystal

2016 ◽  
Vol 119 (6) ◽  
pp. 063904 ◽  
Author(s):  
Yiming Cao ◽  
Maolin Xiang ◽  
Weiyao Zhao ◽  
Guohua Wang ◽  
Zhenjie Feng ◽  
...  
Keyword(s):  
Phase Transition ◽  
Single Crystal ◽  
Magnetic Phase Transition ◽  
Magnetic Entropy Change ◽  
Magnetic Phase ◽  
Entropy Change ◽  
Magnetic Entropy

Magnetic entropy change and magnetic phase transition of LaFe 11.4 Al 1.6 C x ( x =0–0.8) compounds

2006 ◽  
Vol 15 (4) ◽  
pp. 845-849 ◽  
Author(s):  
Chen Jing ◽  
Zhang Hong-Wei ◽  
Zhang Li-Gang ◽  
Dong Qiao-Yan ◽  
Wang Ru-Wu
Keyword(s):  
Phase Transition ◽  
Magnetic Phase Transition ◽  
Magnetic Entropy Change ◽  
Magnetic Phase ◽  
Entropy Change ◽  
Magnetic Entropy

Magnetic Phase Transition and Magnetic Proporties of LaFe11.6Si1.4Bx Compounds

2013 ◽  
Vol 750-752 ◽  
pp. 919-922
Author(s):  
Kun Xie ◽  
Yin Liu ◽  
Mei Qing Cao ◽  
Peng Cheng Xia ◽  
Li Jie Yue
Keyword(s):  
Phase Transition ◽  
Curie Temperature ◽  
Magnetic Phase Transition ◽  
Magnetic Entropy Change ◽  
Magnetic Phase ◽  
Magnetic Transition ◽  
Entropy Change ◽  
Magnetic Entropy ◽  
First Order ◽  
Melt Spun

The magnetic phase transition and magnetic entropy change of melt-spun LaFe11.6Si1.4Bx(x=0.0, 0.3, 0.5, 0.7) ribbons were investigated by measuring the magnetization as the function of temperature. Comparing with LaFe11.6Si1.4, the NaZn13-type structure of LaFe11.6Si1.4Bxdid not change after introducing B atoms, while the amount of α-Fe phase in the ribbons significantly decreased. The Curie temperature slightly changes after the addition of B. The LaFe11.6Si1.4Bx(x=0.3, 0.5) exhibits first-order magnetic transition and large magnetic entropy change as observed in LaFe11.6Si1.4compound.

scholarly journals The magnetic, magnetic entropy and critical behavior studies in La0.8Ba0.2MnO3 around magnetic phase transition temperature.

2020 ◽  
Author(s):  
Mazhar Iqbal ◽  
Muhammad Nasir Khan ◽  
Ayaz Arif Khan ◽  
Khurram Shahzad ◽  
Imran Zaka ◽  
...  
Keyword(s):  
Phase Transition ◽  
Magnetic Phase Transition ◽  
Equations Of State ◽  
Magnetic Measurements ◽  
Magnetic Phase ◽  
Critical Phenomenon ◽  
Entropy Change ◽  
Rhombohedral Structure ◽  
Cooling Power ◽  
Magnetic Entropy

Abstract Magnetocaloric and critical phenomenon investigations were carried out in the crystalline La0.8Ba0.2MnO3 samples prepared through solid state reaction technique. X-ray diffraction (XRD) pattern and its Rietveld refinement using Rietica software confirmed the crystalline phase purity of rhombohedral structure with space group \(R\bar{3}c\). From magnetic measurements, the Ferromagnetic to paramagnetic (FM-PM) phase transition was observed at TC ~ 285K. The maximum change in magnetic entropy (\(Delta{S}^{max}_M\)) and relative cooling power (RCP) extracted from magnetic measurements were 3.02 J/kg K and 142.00 J/kg at an applied magnetic field (moH) of 4T. Griffiths phase (GP) with a susceptibility exponent λ = 0.44 was also detected in temperature range of TC < T < TG. Critical exponential analysis indicated the 3D-Ising model like magnetic phase transition at TC. Critical exponent’s reliability was confirmed using models such as universal scaling equations of state and Widom scaling relation. Magnetic entropy change follows the law ΔSM = (moH)n for n = 0.46.

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