Tusharkanti Dey, A. V. Mahajan
Hexagonal Ba3RuTi2O9 consists of a layered triangular network of Ru4+ (S=1) ions. Magnetic susceptibility chi(T) and heat capacity data show no long range magnetic ordering down to 1.8K. A Curie-Weiss (CW) fitting of chi(T) yields a large antiferromagnetic CW temperature =-166K. However, with low field, a splitting of zero field cooled (ZFC) and field cooled (FC) (T) is observed below 30K. Our measurements suggest that Ba3RuTi2O9 is a highly frustrated system and some parts of the material undergo a spin glass transition at 30K.
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http://arxiv.org/abs/1209.6436
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