Magnetic Compton Scattering Studies of the Invar Effect in Fe3Pt

1994 ◽  
Vol 375 ◽  
Author(s):  
C. J. Yahnke ◽  
G. Srajer ◽  
D. R. Haeffner ◽  
D. M. Mills ◽  
L. Assoufid
Keyword(s):  
Phase Transition ◽  
Curie Temperature ◽  
Compton Scattering ◽  
Magnetic Phase Transition ◽  
Room Temperature ◽  
Magnetic Phase ◽  
Substantial Reduction ◽  
Compton Profile ◽  
Invar Effect ◽  
The Moment

AbstractWe have measured the magnetic Compton profile (MCP) of ordered and disordered Fe 3Pt samples both above and below their Curie temperature. From these measurements, we have determined the average moment per atom at room temperature to be 2.81μB ± 0.04μB for disordered Fe3Pt and 1.78μB ± 0.05μB for ordered Fe3Pt. At temperatures above Tc, we measured a substantial reduction in the moment (0.6μB ± 0.10μB for disordered Fe3Pt and 0.64μB ± 0.13μB ± for ordered Fe3Pt) and a change in the shape of the MCP. This suggests that the mechanism behind the Invar effect in Fe3Pt can be described by a high-spin to low-spin magnetic phase transition. The experimental MCPs for both ordered and disordered Fe3 Pt are analyzed within the framework of the Weiss 2γ model.

Tuning the magnetic phase transition above room temperature through Fe and Mn modification in gallium ferrite with reduced leakage current

2020 ◽  
Vol 53 (22) ◽  
pp. 225001
Author(s):  
Sita Dugu ◽  
Shalini Kumari ◽  
Dhiren K Pradhan ◽  
Claudia Zuluaga Gómez ◽  
Mikel Holcomb ◽  
...  
Keyword(s):  
Phase Transition ◽  
Leakage Current ◽  
Magnetic Phase Transition ◽  
Room Temperature ◽  
Magnetic Phase ◽  
Fe And Mn

Magnetic phase transition and room-temperature magnetocaloric effects in (Al,M)Fe2B2 (M = Si, Ga) compounds

2019 ◽  
Vol 484 ◽  
pp. 154-158
Author(s):  
Zhihao Zhang ◽  
Guiquan Yao ◽  
Lu Zhang ◽  
Peng Jia ◽  
Xiaoxiao Fu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Magnetic Phase Transition ◽  
Room Temperature ◽  
Magnetic Phase

Magnetic phase transition and large room temperature magnetoresistance in Ni doped FeRh films

2018 ◽  
Vol 741 ◽  
pp. 557-561 ◽  
Author(s):  
Jia-hui Chen ◽  
Jing Ma ◽  
Yu-jun Zhang ◽  
Liang Wu ◽  
C.W. Nan
Keyword(s):  
Phase Transition ◽  
Magnetic Phase Transition ◽  
Room Temperature ◽  
Magnetic Phase

Photoinduced magnetic phase transition and remarkable enhancement of magnetization for a photochromic single-molecule magnet

2021 ◽  
Author(s):  
Li-Zhen Cai ◽  
Pei-Yu Guo ◽  
Ming-Sheng Wang ◽  
Guo-Cong Guo
Keyword(s):  
Phase Transition ◽  
Single Molecule ◽  
Magnetic Phase Transition ◽  
Room Temperature ◽  
Magnetic Phase ◽  
Ferromagnetic Transition ◽  
Single Molecule Magnet ◽  
Magnetization Change

A photochromic single-molecule magnet with large magnetization change (+20.9%) at room temperature and paramagnetic to ferromagnetic transition was successfully achieved.

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.

Photoinduced magnetic phase transition in an organic radical 1,3,5-trithia-2,4,6-triazapentalenyl crystal at room temperature

2003 ◽  
Vol 378 (3-4) ◽  
pp. 456-462 ◽  
Author(s):  
J. Takeda ◽  
M. Imae ◽  
O. Hanado ◽  
S. Kurita ◽  
M. Furuya ◽  
...  
Keyword(s):  
Phase Transition ◽  
Magnetic Phase Transition ◽  
Room Temperature ◽  
Magnetic Phase ◽  
Organic Radical

scholarly journals Study of physical properties of a ferrimagnetic spinel Cu1.5Mn1.5O4: spin dynamics, magnetocaloric effect and critical behavior

RSC Advances ◽  
2021 ◽  
Vol 11 (41) ◽  
pp. 25664-25676
Author(s):  
Abir Hadded ◽  
Jalel Massoudi ◽  
Sirine Gharbi ◽  
Essebti Dhahri ◽  
A. Tozri ◽  
...  
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Physical Properties ◽  
Magnetocaloric Effect ◽  
Phase Transition Temperature ◽  
Magnetic Phase Transition ◽  
Critical Behavior ◽  
Magnetic Phase ◽  
Spin Dynamics ◽  
Critical Behaviour

The present work reports a detailed study of the spin dynamics, magnetocaloric effect and critical behaviour near the magnetic phase transition temperature, of a ferrimagnetic spinel Cu1.5Mn1.5O4.

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