Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-09-25
Physics
Condensed Matter
Strongly Correlated Electrons
In Communication with a Journal
Scientific paper
10.1103/PhysRevB.79.014425
The results of the magnetization studies on Pr_{5}Ge_{3}and Tb_{5}Ge_{3} single crystals are reported. Single Crystals of Pr_{5}Ge_{3} and Tb_{5}Ge_{3} compounds were successfully grown by Czochralski method. These compounds crystallize in a Mn_{5}Si_{3} type hexagonal structure with space group P6_{3}/mcm. Ferromagnetic correlations set in at around 36 K in Pr_{5}Ge_{3} in the ab plane followed by an antiferromagnetic transition at 13 K. Along the c-axis the magnetization shows a ferromagnetic transition around 13 K with an overall ferrimagnetic behavior. At 2K, the magnetic isotherm of the compound along [0001] direction is typical for a ferromagnet, while a field induced ferromagnetic type response is observed along the [10\overline{\mathit{1}}0] direction. Hexagonal ab plane or [10\overline{\mathit{1}}0] direction was found to be the easy axis of magnetization. Tb_{5}Ge_{3} orders antiferromagneticaly at 85 K with the hexagonal ab plane as easy axis of magnetization. The compound shows a field induced ferromagnetic behavior in its magnetic isotherm at 2 K.
Dhar Sudesh Kumar
Joshi Devang A.
Thamizhavel Arumugam
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