Room-temperature magnetoresistance in an oxide material with an ordered double-perovskite structure
Article Abstract:
Colossal magnetoresistance has been observed recently in manganese oxides with perovskite structure. Such materials feature a high degree of spin polarization of the charge carriers due to the half-metallic nature. The electronic structure of the ordered perovskite Sr(sub2)FeMoO(sub6) has been calculated using the density functional method. It exhibits intrinsic tunnelling-type magnetoresistance at room temperature.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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Magnetic control of ferroelectric polarization
Article Abstract:
Research describes the discovery of ferroelectricity in a perovskie manganite. Data indicate that spin frustration in the manganite causes sinusoidal antiferromagnetic ordering followed by magnetoelastically induced lattice modulation and spontaneous polarization. Further, the magnetic ferroelectric manganite exhibits gigantic magnetoelectric and magnetocapacitance effects.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2003
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Observation of orbital waves as elementary excitations in a solid
Article Abstract:
Research is presented concerning the experimental evidence relating to orbitally ordered states which have been discovered in transition-metal compounds. The evidence for orbitons in LaMnO3 is discussed.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
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