Results 141 to 150 of about 706 (175)

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
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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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Colossal Magnetoresistive Oxides

2000
1. Fundamental Features of CMR Manganites 2. Spin Dynamics and Electronic Structures 3. Materials Systematics and Lattice Effects 4. Tunnelling Magnetoresistance.
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Colossal Magnetoresistive Manganites

2004
This book is a comprehensive account of the present understanding of an important class of perovskite oxide materials with potential industrial applications. The chapters are written by well-known scientists who are on the forefront of the field and have directly contributed to its recent progress.
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The overdoped colossal magnetoresistive manganites

Journal of Physics: Condensed Matter, 2007
The rich physics in the overdoped regime in colossal magnetoresistive manganites is discussed in detail. Apart from having a large magnetoresistance like its underdoped counterpart, the overdoped regime offers a rich variety of phenomena including magnetic, charge and orbital order at low temperatures.
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Mesoscopic Thermodynamics of an Inhomogeneous Colossal-Magnetoresistive Phase

Physical Review Letters, 2000
Equilibrium conductivity fluctuations of mesoscopic domains are found in film and bulk single-crystal manganite colossal magnetoresistive material. Temperature and field dependences of the Boltzmann factors for a collection of two-state fluctuators give measures of the magnetic moment and entropy differences between the states, and of the fluctuator ...
, Merithew, , Weissman, , Hess, , Spradling, , Nowak, , O'Donnell, , Eckstein, , Tokura, , Tomioka   +8 more
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Novel colossal magnetoresistance in NaCr2O4

Journal of the Korean Physical Society, 2013
NaCr2O4 was recently discovered using a high-pressure synthesis to occur in a calcium-ferrite-type structure, where one-dimensional electronic correlations and geometrical frustrations can coexist. It shows unconventional colossal magnetoresistance (CMR) at temperatures below antiferromagnetic ordering temperature of T
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DYNAMICS AND LOCAL STRUCTURE OF COLOSSAL MAGNETORESISTANCE MANGANITES

International Journal of Modern Physics B, 2000
We report Extended X-ray Absorption Fine Structure and anelastic spectroscopy measurements on hole doped manganese oxides La 1-x Ca x MnO 3 which present the colossal magnetoresistance effect. EXAFS measurements were realized both in the absence and presence of an applied magnetic field of 1.1 Tesla, in a wide temperature range (between 330 and 77 K ...
C. Castellano, F. Cordero, R. Cantelli, C. Menghini, S. Mobilio, D. D. Sarma, FERRETTI, MAURIZIO   +6 more
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Theory of colossal magnetoresistance in manganites

Journal of Physics: Condensed Matter, 1999
The recent attempt to account for the existence of several magnetic phases in insulating perovskite manganites in terms of the interplay between the orbital and spin orders produced by the localized eg and t2g electrons is extended to the metallic state which is obtained on doping.
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Ultrafast Conductivity Dynamics in Colossal Magnetoresistance Manganites

Physical Review Letters, 2001
Ultrafast picosecond measurements of optically induced changes in the absolute conductivity (0.4-1.0 THz) of La0.7M0.3MnO3 thin films ( M = Ca, Sr) from 10 K to approximately 0.9 Tc reveal a two-component relaxation. A fast, approximately 2 ps, conductivity decrease arises from an optically induced modification of the effective phonon temperature.
R D, Averitt, A I, Lobad, C, Kwon, S A, Trugman, V K, Thorsmølle, A J, Taylor   +5 more
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