Cation disorder influence on magnetic and magnetoelastic properties of (TbNd)0.55Sr0.45MnO3 and (EuNd)0.55Sr0.45MnO3 manganites

Abstract Magnetic, transport, magnetotransport, elastic and magnetoelastic properties of Re 0.55 Sr 0.45 MnO 3 ceramic with fixed carrier concentration and tolerance factor but with different cation disorder parameter σ have been studied. A linear relation between T C and σ 2 was found. Increase of σ leads to suppression of magnetoresistance and enhancement of volume change near T C . At T > T C sharp increase of magnetostriction and magnetization is observed at critical field H C , which increases with temperature rise. H C value, defined at fixed T / T C , decreases with σ .