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Transparent ferromagnetic alkali/chalcogenide compound comprising solid solution of transition metal 发明申请

2023-06-02 2630 815K 0

专利信息

申请日期 2025-07-16 申请号 US10554866
公开(公告)号 US20060231789A1 公开(公告)日 2006-10-19
公开国别 US 申请人省市代码 全国
申请人 Hiroshi Yoshida; Masayoshi Seike; Kazunori Sato; Akira Yanase
简介 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.


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