1. Magnetic and calorimetric studies on 6H-perovskite Ba3TbRu2O9
- Author
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Doi, Yoshihiro, Wakeshima, Makoto, Hinatsu, Yukio, Tobo, Aya, Ohoyama, Kenji, and Yamaguchi, Yasuo
- Subjects
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PEROVSKITE , *MAGNETIC properties - Abstract
Magnetic and calorimetric properties of Ba3TbRu2O9 are reported. Neutron diffraction measurements show that this compound adopts the 6H-perovskite structure with space group P63/mmc, in which the cation sites within the face-sharing octahedra are occupied by Ru ions and those within the corner-sharing octahedra are occupied by Tb ions. The magnetic susceptibility and specific heat measurements indicate that an antiferromagnetic transition occurred at 9.5 K. Neutron diffraction data collected at 2 K show that Ba3TbRu2O9 has a long-range antiferromagnetic ordering of Tb4+ ions. The moments of Tb4+ ions order ferromagnetically in the c planes, and these ferromagnetic planes are stacked antiferromagnetically along the c-axis. The direction of ordered moments is parallel to the c-axis. The ordered magnetic moment of Tb4+ ions is 6.84(4) μB. [Copyright &y& Elsevier]
- Published
- 2002
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