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    • 6. 发明授权
    • Spinel ferrite thin film and method of manufacturing the same
    • 尖晶石型铁氧体薄膜及其制造方法
    • US06488908B1
    • 2002-12-03
    • US09652011
    • 2000-08-31
    • Tomoji KawaiHitoshi TabataYuji Muraoka
    • Tomoji KawaiHitoshi TabataYuji Muraoka
    • C01G4900
    • H01F41/205C23C14/08C30B23/002C30B23/02C30B29/26G11B7/00
    • A substrate and a target are disposed within a vacuum chamber, and an oxygen partial pressure within the vacuum chamber is set to 1×10−5 or less. Under this condition, a spinel ferrite thin film selected from the group consisting of compounds represented by the formula AE1+tFe2−2tTMtO4, where AE represents an alkaline earth metal or an alkali metal, TM represents a transition metal and t falls within a range of between 0.2 and 0.6, and compounds represented by the formula Zn1−xCoxFe2O4, where x falls within a range of between 0.2 and 0.7, is deposited on the substrate by laser beam deposition. The particular method makes it possible to provide a spinel ferrite thin film realizing a spin glass state under temperatures around or higher than room temperature and capable of controlling the spin state by light.
    • 将基板和靶设置在真空室内,真空室内的氧分压设定为1×10 -5以下。 在这种条件下,选自由式AE1 + tFe2-2tTMtO4表示的化合物组成的组的尖晶石铁氧体薄膜,其中AE表示碱土金属或碱金属,TM表示过渡金属,t落在 在0.2和0.6之间,通过激光束沉积在衬底上沉积由式Zn1-xCoxFe2O4表示的化合物,其中x落在0.2和0.7之间的范围内。 具体的方法使得可以提供在大约或高于室温的温度下实现旋转玻璃态的尖晶石铁氧体薄膜,并且能够通过光控制自旋状态。