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[Co_(90)Fe_(10)/Pt]_(3)反常霍尔薄膜噪声研究 被引量:1
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作者 李建伟 陈养厚 《磁性材料及器件》 CAS CSCD 2022年第3期28-31,共4页
利用磁控溅射法制备[Co_(90)Fe_(10)(2.8Å)/Pt(12Å)]_(3)反常霍尔薄膜,分析了其噪声。反常霍尔薄膜低频噪声呈1/f^(2)形式,这可能与反常霍尔效应的机制有关。低频噪声与霍尔电压都能够反映薄膜内部的磁畴随外场的变化。霍尔... 利用磁控溅射法制备[Co_(90)Fe_(10)(2.8Å)/Pt(12Å)]_(3)反常霍尔薄膜,分析了其噪声。反常霍尔薄膜低频噪声呈1/f^(2)形式,这可能与反常霍尔效应的机制有关。低频噪声与霍尔电压都能够反映薄膜内部的磁畴随外场的变化。霍尔电压的热噪声是由薄膜磁畴的分布决定的,低场下热噪声较小,有磁畴翻转或是巴克豪森跳跃时热噪声明显增大,热噪声达到最大值与霍尔电压达到极值不同步。 展开更多
关键词 [co_(90)Fe_(10)(2.8Å)/Pt(12Å)]_(3)薄膜 1/f^(2)噪声 热噪声 反常霍尔 磁畴
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MAGNETIC PROPERTIES AND CRYSTALLIZATION OF AMORPHOUS ALLOYS Co_(90-x)Cr_xZr_(10)
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作者 HU Fengxia State Key Laboratory of Magnetism,Institute of Physics,Academia Sinica,Beijing,ChinaCHEN Jinchang Beijing Teacher’s College,Beijing,ChinaSHEN Baogen GUO Huiqun State Key Laboratory of Magnetism,Institute of Physics,Academia Sinica,Beijing,China 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1992年第10期300-305,共6页
Curie temperature of amorphous alloys Co_(90-x)Cr_x Zr_(10) decreases linearly with increas- ing x.Average magnetic moment per magnetic atom Co or Cr is 1.51 μB or -3.62 μB respectively.The temperature dependence of... Curie temperature of amorphous alloys Co_(90-x)Cr_x Zr_(10) decreases linearly with increas- ing x.Average magnetic moment per magnetic atom Co or Cr is 1.51 μB or -3.62 μB respectively.The temperature dependence of spontaneous magnetization at low temper- atures is in agreement with Bloch's T^(3/2) law.The spin wave stiffness constant decreases with increasing x from 4 to 20.The range of interaction is 2—3 atoms for x=4 and nearest neighbour atom for x=20.The crystallization temperature increases mono- tonically with increasing x.It may relate to the average number of outer electrons per atom.The crystalline phase components of heat-treated alloys were analyzed by X-ray diffration and thermomagnetic measurement. 展开更多
关键词 amorphous state MAGNETIC properties CRYSTALLIZATION co_(90)-_xCr_xZr_(10)
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