Relation between giant volume magnetostriction and colossal magnetoresistance near the Curie temperature of Sm0.55Sr0.45MnO3статья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The magnetic, transport, and elastic properties of Sm0.55Sr0.45MnO3 have been established to be. interrelated. At the Curie point, one observes a large volume compression Delta V/V approximate to 0.1%, a sharp minimum in the temperature dependence of negative volume magnetostriction omega(T), and a maximum in the temperature dependence of the electrical resistivity. Giant negative volume magnetostriction omega = -5 x 10(-4) has been found in a magnetic field H = 0.9 T, which is accompanied by a colossal negative magnetoresistance of 44% in the same field. The results obtained are discussed in terms of a model of electronic phase separation. (C) 2000 MAIK "Nauka/Interperiodica".