Change in the Resistivity of bcc and bct FeRh Alloys at First-Order Magnetic Phase Transitions

1995 ◽  
Vol 64 (10) ◽  
pp. 3978-3985 ◽  
Author(s):  
Shinji Yuasa ◽  
Takashi Akiyama ◽  
Hideki Miyajima ◽  
Yoshichika Otani
Keyword(s):  
Phase Transitions ◽  
Magnetic Phase ◽  
Magnetic Phase Transitions ◽  
First Order

MAGNETIC PHASE TRANSITIONS IN Ce(Fe1–xCox)2 SYSTEM

1993 ◽  
Vol 07 (01n03) ◽  
pp. 822-825 ◽  
Author(s):  
NAUSHAD ALI ◽  
XIANFENG ZHANG
Keyword(s):  
Phase Transitions ◽  
Magnetic Phase ◽  
Ac Susceptibility ◽  
Magnetic Phase Diagram ◽  
Ferromagnetic State ◽  
Magnetic Phase Transitions ◽  
Itinerant Electron ◽  
Electron Systems ◽  
First Order ◽  
First Order Transition

Re-entrant magnetic phase transitions in Ce(Fe1–xMx)2 systems (where M=Al, Ru, Co, etc.) are being investigated by various research groups. It has been observed that the system goes from a paramagnetic to ferromagnetic state followed by an almost complete loss of magnetization as the temperature is lowered. We have done systematic experimental measurements of magnetization, ac susceptibility, electrical resistivity, and thermal expansion on the Ce(Fe1–xCox)2 system. It is found that as the temperature is decreased, the system goes from para- to ferro- to antiferro-magnetic phase. The ferro- to antiferro-magnetic phase transition is a first order transition. Our experimental results are consistent with the magnetic phase diagram predictions by Moriya and Usami's theory of strongly interacting itinerant electron systems.

Three first order magnetic phase transitions in re-entrant ferromagnet PrMn1.4Fe0.6Ge2

2010 ◽  
Vol 505 (2) ◽  
pp. L38-L42 ◽  
Author(s):  
R. Zeng ◽  
J.L. Wang ◽  
L. Lu ◽  
W.X. Li ◽  
S.J. Campbell ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Magnetic Phase ◽  
Magnetic Phase Transitions ◽  
First Order

First-order magnetic phase transitions in thin films

JETP Letters ◽  
2006 ◽  
Vol 83 (2) ◽  
pp. 79-82
Author(s):  
J. -P. Ader ◽  
A. I. Buzdin
Keyword(s):  
Thin Films ◽  
Phase Transitions ◽  
Magnetic Phase ◽  
Magnetic Phase Transitions ◽  
First Order

STRUCTURAL AND MAGNETIC PHASE TRANSITIONS OF BiFeO3 INDUCED BY PRESSURE

2013 ◽  
Vol 06 (03) ◽  
pp. 1350026 ◽  
Author(s):  
HONG-JIAN FENG ◽  
XIAOYUN HU ◽  
HUIJUAN CHEN
Keyword(s):  
Phase Transitions ◽  
First Principles ◽  
Magnetic Phase ◽  
Structural Phase ◽  
Orthorhombic Phase ◽  
Magnetic Phase Transitions ◽  
Ferromagnetic Transition ◽  
First Principles Calculations ◽  
First Order ◽  
Pressure Region

First-principles calculations on BiFeO3 under low-pressure region show that the rhombohedral-monoclinic and rhombohedral-orthorhombic phase transitions can be found around the critical pressure value, ~9 GPa.We suggest that the structure involve the combination of these three phases and change to the pure orthorhombic phase gradually as pressure is beyond the critical value. Moreover, it is a first-order structural phase transition, accompanied with antiferromagnetic–ferromagnetic transition.

First-Order Magnetic Phase Transitions in Fe

1981 ◽  
Vol 47 (24) ◽  
pp. 1761-1765 ◽  
Author(s):  
Kristl B. Hathaway ◽  
Gary A. Prinz
Keyword(s):  
Phase Transitions ◽  
Magnetic Phase ◽  
Magnetic Phase Transitions ◽  
First Order

Clusterization Phenomena and Magnetic Phase Transitions in Rare Earth Intermetallics

2011 ◽  
Vol 170 ◽  
pp. 270-275 ◽  
Author(s):  
D.P. Rojas ◽  
N. Marcano ◽  
J.C. Gómez Sal
Keyword(s):  
Rare Earth ◽  
Phase Transitions ◽  
Magnetic Phase ◽  
Ferromagnetic State ◽  
Magnetic Phase Transitions ◽  
Ferromagnetic Transition ◽  
Long Range Order ◽  
Percolation Process ◽  
Magnetic Cluster ◽  
First Order

Two cases of anomalous phase transitions in Ce intermetallics are presented. In CeIn2 multiple signatures of a first order paramagnetic-ferromagnetic transition at 22 K have been experimentally detected. We discuss possible mechanisms for such behaviour and the new studies in the La1-xCexIn2 series. In the he case of CeNi1-xCux the low temperature ferromagnetic long range order appears owing to a magnetic cluster percolation process, from a cluster glass state established above the ferromagnetic state.

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