Magnetic two-phase ferromagnetic-antiferromagnetic state in manganitesстатья
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Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
Аннотация:Distinction between the magnetizations and remanences of zero-field-cooled and field-cooled sample and displacement of hysteresis loop of field-cooled sample are found in La0.9Sr0.1MnO3 single crystals, Eu0.7A0.3MnO3 (A = Ca,sr) ceramics, and La0.84Sr0.16MnO3 and La0.1Pr0.6Ca0.3 thin films. This displacement denotes that ferro-antiferromagnetic state is inherent in them. From this displacement we calculated the exchange integral |J|= 10^(-7) - 10^(-6) eV, described the Mn-O-Mn connection across droplet/host interface. The behavior of CMR and volume magnetostriction near Tc are similar in La(1-x)SrxMnO3 and explained magnetic two-phase state due to strong s-d exchange.