磁壁釘扎 的英文怎麼說
中文拼音 [cíbìdīngzhā]
磁壁釘扎
英文
wall pinning-
And the sm ( cocufezr ) z thin films with lower magnetocrystalline anisotropy constant of cell boundary phase will have a higher coercivity
而較低的胞壁相磁晶各向異性常數k1 ,則有助於獲得高的釘扎場。Based on the micromagnetic model of the sm ( cocufezr ) z thin films presented in this thesis, the pining field has been computed with different physical parameters of the cell boundary phase
本文首先建立了sm ( co , cu , fe , zr ) z薄膜疇壁釘扎的二維微磁學模型,研究了胞壁相的厚度和磁晶各向異性常數對疇壁釘扎的影響。X - ray diffraction results revealed that the structure of as - deposited smco film was amorphous and crystallization happened after the films annealed at 500 in vacuum. the magnetic tests of smco thin films showed that its coercivity reduced with the increase of film ' s thickness while the ratio of mr / ms was opposite. the films " coercivity and mr / ms declined after it annealed at 500 because the machanism of magnetization were changed from domain wall nailing into magnetic nuclear forming
研究結果表明,由於雜質fe的摻入降低了smco薄膜的磁性能;制備態smco薄膜為非晶態結構,矯頑力hc隨著薄膜厚度的增加而減小,剩磁比mr ms隨膜厚增加而增加;經過500真空退火熱處理后,薄膜出現smcos的結晶物,矯頑力hc降低, mr ms減小,磁化機制由疇壁釘扎類模型轉為形核類模型。
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