Abstract
Giant volume magnetostriction =2.4×10 −4 in magnetic field 8.2 kOe is found in La 0.8Ba 0.2MnO 3 single crystal near Curie point T C . Volume magnetostriction and magnetoresistance exhibit similar dependence on temperature and magnetic field in T C -region that is explained by the presence in this compound of magnetic two-phase ferro-antiferromagnetic state due to strong s– d exchange.
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