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    • 40. 发明公开
    • TRANSPARENT FERROMAGNETIC ALKALI/CHALCOGENIDE COMPOUND COMPRISING SOLID SOLUTION OF TRANSITION METAL OR RARE EARTH METAL AND METHOD OF REGULATING FERROMAGNETISM THEREOF
    • TRANSPARENT铁磁碱/硫族化合物材料,其包含过渡金属或稀土金属的固溶体,AND METHOD FOR CONTROL OF铁磁THEREOF
    • EP1634979A1
    • 2006-03-15
    • EP04720196.7
    • 2004-03-12
    • Japan Science and Technology Agency
    • YOSHIDA, HiroshiSEIKE, MasayoshiSATO, KazunoriYANASE, Akira
    • C30B29/10G02F1/09H01F1/00
    • G02F1/0036H01F1/0009H01F1/055H01F1/402
    • Disclosed is a ferromagnetic alkali chalcogen compound capable of providing a completely-spin-polarized transparent ferromagnetic material using an alkali chalcogen compound having light-transparency, and a method of adjusting ferromagnetic properties thereof. The transparent ferromagnetic alkali chalcogenide comprises an alkali chalcogen compound which has an anti-fluorite structure and contains at least one metal element selected from a 3d transition metal element group consisting of Ti, V, Cr, Mn, Fe, Co, Ni and Cu; a 4d transition metal element group consisting of Zr, Nb, Mo, Tc, Ru and Rh; a 5d transition metal element group consisting of Hf, Ta, W, Os, Re and Ir; and a lanthanum-series rare-earth element group consisting of Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu. The selected metal element is incorporated in the alkali chalcogen compound in the form of a solid solution to provide a ferromagnetic characteristic thereto. The ferromagnetic properties are adjusted through control of valence states based, for example, on adjustment of a concentration of each of the metal elements, selection of a combination of two or more of the metal elements, and/or addition of an acceptor and a donor.
    • 公开的是能够提供使用上具有光透明性碱硫属化合物完全呼叫自旋极化透明铁磁材料,并调整其铁磁特性的方法的一个铁磁碱硫属化合物。 透明铁磁碱硫族化物其中有抗萤石结构,并且包含碱的硫属化合物的包括从由钛,钒,铬,锰,铁,钴,镍和铜的3d过渡金属元素组中的至少一种金属元素; 4d过渡金属元素选自由锆,铌,钼,锝,Ru和Rh组成的; 一个5d过渡金属元素选自由铪,钽,钨,锇,铼和铱的; 和自由铈,镨,钕,PM,钐,铕,钆,铽,镝,钬,铒,铥,镱和鲁的镧系稀土元素组。 所选择的金属元素在碱硫属化合物中掺入固体溶液的形式,以提供一个铁磁特性于此。 铁磁属性通过化合价的控制来调整各州基于,例如,在各金属元素的浓度的调整,两种或更多种金属元素,和/或添加的受体和供体的组合的选择 ,