%0 Journal Article
%T Low-temperature specific heat for ferromagnetic and antiferromagnetic orders in CaRu1-xMnxO3
%A M. Yokoyama
%A S. Nakano
%A S. Someya
%A T. Nakada
%A N. Wada
%A H. Kawanaka
%A H. Bando
%A K. Tenya
%A A. Kondo
%A K. Kindo
%J Physics
%D 2012
%I arXiv
%R 10.1088/1742-6596/391/1/012114
%X Low-temperature specific heat of CaRu1-xMnxO3 was measured to clarify the role of d electrons in ferromagnetic and antiferromagnetic orders observed above x=0.2. Specific heat divided by temperature C_p/T is found to roughly follow a T^2 function, and relatively large magnitudes of electronic specific heat coefficient gamma were obtained in wide x range. In particular, gamma is unchanged from the value at x=0 (84 mJ/K^2 mol) in the paramagnetic state for x<=0.1, but linearly reduced with increasing x above x= 0.2. These features of gamma strongly suggest that itinerant d electrons are tightly coupled with the evolution of magnetic orders in small and intermediate Mn concentrations.
%U http://arxiv.org/abs/1206.1658v1