STRUCTURAL AND MAGNETIC PHASE TRANSITIONS OF BiFeO3 INDUCED BY PRESSURE

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.

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Spin-manipulated phonon dynamics during magnetic phase transitions in triangular lattice antiferromagnet CuCr1−xMgxO2 semiconductor films

RSC Advances ◽

10.1039/c6ra02881k ◽

2016 ◽

Vol 6 (32) ◽

pp. 27136-27142 ◽

Cited By ~ 6

Author(s):

Xurui Li ◽

Junyong Wang ◽

Jinzhong Zhang ◽

Yawei Li ◽

Zhigao Hu ◽

...

Keyword(s):

Phase Transitions ◽

First Principles ◽

Magnetic Phase ◽

Magnetic Phase Transitions ◽

First Principles Calculations ◽

Semiconductor Films ◽

Temperature Dependent ◽

Phonon Spectra ◽

Phonon Dynamics ◽

Triangular Lattice Antiferromagnet

The temperature-dependent phonon spectra and magnetoresistance of CuCr1−xMgxO2 films have been studied, combined with first-principles calculations.

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Clusterization Phenomena and Magnetic Phase Transitions in Rare Earth Intermetallics

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.170.270 ◽

2011 ◽

Vol 170 ◽

pp. 270-275 ◽

Cited By ~ 1

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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Pressure effect on the properties of magnetic moments and phase transitions in YMnO3 from first principles

RSC Advances ◽

10.1039/c6ra08539c ◽

2016 ◽

Vol 6 (59) ◽

pp. 54041-54048 ◽

Cited By ~ 5

Author(s):

Jun-Shuai Chai ◽

Hao Tian ◽

Ai-Jie Mao ◽

Li-Juan Deng ◽

Xiao-Yu Kuang

Keyword(s):

Phase Transitions ◽

First Principles ◽

Pressure Effect ◽

Magnetic Phase ◽

Magnetic Moments ◽

Magnetic Phase Transitions ◽

First Principles Calculations ◽

Orthorhombic Perovskite

We report the properties of magnetic, electronic, phonon frequencies and magnetic phase transitions in orthorhombic perovskite YMnO3 by means of first-principles calculations.

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Revisiting of Specific Heat of Nonsuperconducting PrBCO Ceramics in Orthorhombic Phase: Signature of Magnetic Phase Transitions at Low Temperatures

IEEE Transactions on Applied Superconductivity ◽

10.1109/tasc.2016.2548478 ◽

2016 ◽

Vol 26 (3) ◽

pp. 1-5 ◽

Cited By ~ 2

Author(s):

Mahieddine Lahoubi

Keyword(s):

Phase Transitions ◽

Specific Heat ◽

Low Temperatures ◽

Magnetic Phase ◽

Orthorhombic Phase ◽

Magnetic Phase Transitions

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Entropy change at magnetic phase transitions of the first order and second order

International Journal of Refrigeration ◽

10.1016/j.ijrefrig.2013.07.021 ◽

2014 ◽

Vol 37 ◽

pp. 257-265 ◽

Cited By ~ 10

Author(s):

Vittorio Basso ◽

Carlo P. Sasso ◽

Michaela Küpferling

Keyword(s):

Phase Transitions ◽

Magnetic Phase ◽

Entropy Change ◽

Second Order ◽

Magnetic Phase Transitions ◽

First Order

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Structural phase transitions in VSe2: energetics, electronic structure and magnetism

Physical Chemistry Chemical Physics ◽

10.1039/c9cp03726h ◽

2019 ◽

Vol 21 (40) ◽

pp. 22647-22653 ◽

Cited By ~ 3

Author(s):

Georgy V. Pushkarev ◽

Vladimir G. Mazurenko ◽

Vladimir V. Mazurenko ◽

Danil W. Boukhvalov

Keyword(s):

Electronic Structure ◽

Phase Transitions ◽

Electronic Properties ◽

First Principles ◽

Structural Phase ◽

First Principles Calculations ◽

Structural Phase Transitions

First principles calculations of the magnetic and electronic properties of VSe2 describing the transition between two structural phases (H,T) were performed.

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

International Journal of Modern Physics B ◽

10.1142/s0217979293001748 ◽

1993 ◽

Vol 07 (01n03) ◽

pp. 822-825 ◽

Cited By ~ 1

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.

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