Journal ArticleDOI
Tricritical point and critical exponents of La0.7Ca0.3−xSrxMnO3 (x = 0, 0.05, 0.1, 0.2, 0.25) single crystals
Manh-Huong Phan,Victorino Franco,Victorino Franco,Nicholas S. Bingham,Hariharan Srikanth,N.H. Hur,Seong-Cho Yu +6 more
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TLDR
In this paper, a tri-critical point with critical exponents (β = 0.26−±-0.01, γ = 1.06−±−0.02) at the tricritical point was demonstrated.About:
This article is published in Journal of Alloys and Compounds.The article was published on 2010-10-22. It has received 168 citations till now. The article focuses on the topics: Tricritical point & Critical phenomena.read more
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Impact of reduced dimensionality on the magnetic and magnetocaloric response of La0.7Ca0.3MnO3
P. Lampen,Nicholas S. Bingham,Manh-Huong Phan,Heung Soo Kim,M. S. Osofsky,Alberto Piqué,The-Long Phan,Seong-Cho Yu,Hariharan Srikanth +8 more
TL;DR: In this paper, the impact of reduced dimensionality on the magnetic and magnetocaloric responses of a material is studied, which is vital in incorporating it as an active magnetic refrigerant in cooling devices.
Journal ArticleDOI
3D-Ising ferromagnetic characteristics and magnetocaloric study in Pr0.4Eu0.2Sr0.4MnO3 manganite
TL;DR: The structure, critical exponents and magnetocaloric effect (MCE) of the second-order magnetic phase transition were investigated in detail in this article, showing that the sample adopts an orthorhombic structure with Pnma space group.
Journal ArticleDOI
Influence of magnetic field on critical behavior near a first order transition in optimally doped manganites: The case of La1−xCaxMnO3 (0.2≤x≤0.4)
P. Zhang,P. Lampen,The-Long Phan,Seong-Cho Yu,Tran Dang Thanh,Nguyen Huy Dan,V. D. Lam,Hariharan Srikanth,Manh-Huong Phan +8 more
TL;DR: In this paper, a detailed study of the properties of the ferromagnetic to paramagnetic transition in polycrystalline manganites La 1− x Ca x MnO 3 ( x = 0.2, 0.3, and 0.4) is presented.
Journal ArticleDOI
Critical behavior in Sr-doped manganites La0.6Ca0.4−xSrxMnO3
TL;DR: In this article, the critical behavior of La 0.6 Ca 0.4− x Sr x MnO 3 compounds has been investigated based on the data of static magnetic measurements in the vicinity of its critical temperature T C.
Journal ArticleDOI
First-to-second-order magnetic-phase transformation in La0.7Ca0.3-xBaxMnO3 exhibiting large magnetocaloric effect
The-Long Phan,N. T. Dang,T. A. Ho,T. V. Manh,Tran Dang Thanh,Chang Uk Jung,Bo Wha Lee,Anh-Tuan Le,Anh D. Phan,S.C. Yu +9 more
TL;DR: In this article, the authors have prepared polycrystalline samples La 0.7 Ca 0.3- x Ba x MnO 3 materials in magnetic refrigeration and studied their magnetic properties and magnetocaloric effect based on magnetization versus temperature and magnetic-field measurements.
References
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Journal ArticleDOI
Interaction between the d -Shells in the Transition Metals. II. Ferromagnetic Compounds of Manganese with Perovskite Structure
TL;DR: In this paper, it was shown that both electrical conduction and ferromagnetic coupling in these compounds arise from a double exchange process, and a quantitative relation was developed between electrical conductivity and the Ferromagnetic Curie temperature.
Book
Introduction to Phase Transitions and Critical Phenomena
H. Eugene Stanley,Guenter Ahlers +1 more
TL;DR: In this article, the authors present a paperback edition of a distinguished book, originally published by Clarendon Press in 1971, which is at the level at which a graduate student who has studied condensed matter physics can begin to comprehend the nature of phase transitions, which involve the transformation of one state of matter into another.
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Considerations on Double Exchange
TL;DR: In this paper, it was shown that while the states of large total spin have both the highest and lowest energies, their average energy is the same as those of low total spin.
Journal ArticleDOI
On a generalised approach to first and second order magnetic transitions
Journal ArticleDOI
Lattice effects on the magnetoresistance in doped lamno3
Harold Y. Hwang,Harold Y. Hwang,Sang-Wook Cheong,Radaelli Pg,M. Marezio,M. Marezio,Bertram Batlogg +6 more
TL;DR: The results show that the notion of ``double exchange'' must be generalized to include changes in the Mn-Mn electronic hopping parameter as a result of changes inThe Mn-O-Mm bond angle.