3Chubukov A,Pines D,Schmalian J.In:The Physics of Superconductors,Vol Ⅰ,Conventional and High-Tc Superconductors.Eds.Bennemann K H,Ketterson J B.Springer,Berlin,2003.495
4Lynn J W,Skanthakumar S.In:Handbook on the Physics and Chemistry of Rare Earths.Ed.Gschneidner K A,Jr.Eyring L,Maple M B.Elservier,Amsterdam,2001,Vol 31.315
5Kastner M A,Birgeneau R J,Shirane G et al.Rev.Mod.Phys,1998,70:897
6Kimura H,Hirota K,Matsushita H,Yamada K et al.Phys.Rev.B,1999,59:6517
7Yamada K,Lee C H,Kurahashi K et al.Phys.Rev.B,1998,57:6165
8Wakimoto S,Shirane G,Endoh Y et al.Phys.Rev.B,1999,60:R769
