Article ID Journal Published Year Pages File Type
1625354 Journal of Alloys and Compounds 2008 5 Pages PDF
Abstract

Magnetic properties of a series of orthorhombic NaLnTiO4 (Ln = Sm, Eu, Gd, Tb, Dy, Ho and Er) characterized by heat capacity measurements are reported. Magnetic transitions are observed for all NaLnTiO4 investigated except for Ln = Eu. The change in magnetic entropy closely agrees with the expected theoretical values except for Ln = Sm and Gd. Peak profiles in temperature dependence of heat capacity indicate that Ln = Sm, Tb, Dy, Ho and Er phases possess Ising square lattices. Furthermore, Ln = Gd also exhibits the similar property regardless of its S state; there seems some degree of anisotropy in its magnetic lattice. Magnetization and heat capacity data indicate that superexchange through oxygen is the dominant spin interaction in this system.

Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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