Anomalies of volume magnetostriction and thermal expansion in La(1-x)SrxMnO3 due to magnetic two-phase stateстатья
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Дата последнего поиска статьи во внешних источниках: 27 мая 2015 г.
Аннотация:It has been found that an anisotropic contribution to magnetostriction Lt of a La0.7Sr0.3MnO3 single crystal is essential at low temperatures {Lt~ 10^(-4) at 90 K}. In the region of the Curie temperature Tc the value of Lt decreases sharply with T. The bulk magnetostriction omega is negative in the Tc region and the |omega|(T) curve has a maximum at Tc. The temperature dependence of the termal expansion deltaL/L at T > Tc is stronger than linear. The anomalies of omega and deltaL/L are explained by magnetic phase separation.