Results 191 to 200 of about 97,118 (241)

Fermi liquid behavior and colossal magnetoresistance in layered MoOCl2

, 2020
A characteristic of a Fermi liquid is the T^2 dependence of its resistivity, sometimes referred to as the Baber law. However, for most metals, this behavior is only restricted to very low temperatures, usually below 20 K.
Zhi Wang, Meng Huang, Jian-Zhou Zhao, Cong Chen, Hao-Liang Huang, Xiang-Qi Wang, Ping Liu, Jianlin Wang, Junxiang Xiang, Chao Feng, Zengming Zhang, Xudong Cui, Ya-Lin Lu, Sheng-Yuan A. Yang, B. Xiang   +14 more
semanticscholar   +1 more source

Composites (1 − x)La0.7Ca0.3MnO3/xLa0.7Sr0.2Ca0.1MnO3: Electrical transport properties and enhancing of low-field-magnetoresistance and colossal magnetoresistance

, 2020
Composites of (1 − x)La0.7Ca0.3MnO3/xLa0.7Sr0.2Ca0.1MnO3 were prepared via the sol–gel method combined with the energy milling method. The electrical transport and low-field magnetoresistance properties of the composites were systematically studied.
L. H. Nguyen, L.-X. Hung, Phúc Xuân Nguyễn, P. H. Nam, L. T. T. Ngan, N. Dang, L. Bau, P. H. Linh, Phong Thanh Pham   +8 more
semanticscholar   +1 more source

Is a Griffiths Phase a Prerequisite for Colossal Magnetoresistance?

Physical Review Letters, 2007
Detailed measurements of the magnetic and transport behavior of the two La(1-x)Ca(x)MnO(3) single crystals exhibiting colossal magnetoresistance are summarized. The x=0.21 sample exhibits unusual exponents (delta = 20+/-1, gamma = 1.71+/-0.1, beta = 0.09+/-0.01, T(C) = 182+/-1 K) and, more importantly, a Griffiths phase characterized by an exponent ...
Wanjun, Jiang, XueZhi, Zhou, Gwyn, Williams, Y, Mukovskii, K, Glazyrin   +4 more
openaire   +2 more sources

Factors Affecting the Resistivity and Colossal Magnetoresistance (CMR) of Manganite Materials

Journal of Materials Chemistry C
Perovskite manganites exhibit unique phenomena such as phase diversity and colossal magnetoresistance (CMR), originating from the strong interplay between charge, spin, orbital, and lattice degrees of freedom.
Okvarahireka Vitayaya, Budhy Kurniawan, Maykel T. E. Manawan, Marzuki Naibaho   +3 more
semanticscholar   +1 more source

Lattice Effects in the Colossal-Magnetoresistance Manganites

Physical Review Letters, 1996
We study the combined influence of spin double exchange and Jahn-Teller lattice coupling to holes in the ${\mathrm{La}}_{1\ensuremath{-}x}{A}_{x}{\mathrm{MnO}}_{3}$ perovskites ( $A\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}\mathrm{C}\mathrm{a},\phantom{\rule{0ex}{0ex}}\mathrm{S}\mathrm{r},\phantom{\rule{0ex}{0ex}}\mathrm{B}\mathrm{a}$).
, Röder, , Zang, , Bishop
openaire   +3 more sources

Evidence for Ferromagnetic Clusters in the Colossal-Magnetoresistance Material EuB_{6}.

Physical Review Letters, 2018
We combined scanning tunneling microscopy and locally resolved magnetic stray field measurements on the ferromagnetic semimetal EuB_{6}, which exhibits a complex ferromagnetic order and a colossal magnetoresistance effect.
M. Pohlit, S. Rößler, Y. Ohno, H. Ohno, S. Von Molnár, Z. Fisk, J. Müller, S. Wirth   +7 more
semanticscholar   +1 more source

Colossal magnetoresistance and relaxation phenomena

Journal of Physics: Condensed Matter, 1998
The magnetization and magnetoresistance of (A = Sr, Ca) single crystals have been studied in the static regime. The same characteristics have been investigated as functions of time in response to a sharp change of the magnetic field. The magnetic moment M, dynamic magnetic susceptibility , and resistivity are found to relax noticeably in the samples ...
L M Fisher, A V Kalinov, S E Savel'ev, I F Voloshin, A M Balbashov   +4 more
openaire   +1 more source

Colossal negative magnetoresistance in an antiferromagnet

Physical Review B, 1998
The magnetization and resistivity of single crystals of the Zintl compound ${\mathrm{Eu}}_{14}{\mathrm{MnBi}}_{11}$ are measured as functions of temperature and applied magnetic field. The magnetization data show an apparent antiferromagnetic transition at ${T}_{N}=32\mathrm{K}$ even though the high-temperature susceptibility suggests that the exchange
Julia Y. Chan, Susan M. Kauzlarich, Peter Klavins, Robert N. Shelton, David J. Webb   +4 more
openaire   +1 more source

Magnetism and colossal magnetoresistance of Tl2Mn2O7

Physica B: Condensed Matter, 1999
Abstract While ferromagnetism in CMR perovskites is satisfactorily explained by double exchange, its nature in CMR pyrochlore Tl 2 Mn 2 O 7 is unclear. Here we investigate this problem by examining the pressure effect on the Curie temperature of pyrochlores A 2 Mn 2 O 7 , A=Tl, In, Y, Lu.
Yu.V Sushko, Y Kubo, Y Shimakawa, T Manako   +3 more
openaire   +1 more source

Critical features of colossal magnetoresistive manganites

Reports on Progress in Physics, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
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