Measurement of Domain Wall Mobility in Magneto-Optic Media

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概要

• 論文の詳細を見る

• Domain wall mobility in magneto-optic (MO) media is important in determining the thermomagnetic recording and erase process. However, measurement of domain wall mobility has been difficult due to the large coercivity of MO media near room temperature and the weak MO signal at high temperature. With an improved high speed polar Kerr MO camera system, the dynamics of domain wall motion can now be imaged and measured at temperatures near T_<curie>. The domain wall mobility in GdTbFe samples was measured with the bubble collapse method. The experimental results show that the domain wall motion velocity is a linear function of applied bias field and the domain wall mobility is about 0.3 cm/sOe. Samples with different preparation methods are compared and the experiment shows that whereas the dynamic coercivity varies with the preparation method, the mobility is an intrinsic property and dependent primarily upon sample composition.

• 社団法人応用物理学会の論文
• 1993-11-30

著者

• Schultz M

  Data Storage Systems Center Carnegie Mellon University

• Kryder M

  Data Storage Systems Center Carnegie Mellon University

• Kryder Mark

  Data Storage Systems Center Carnegie Mellon University

• DU Mann

  Data Storage Systems Center, Carnegie Mellon University

• SCHULTZ Mark

  Data Storage Systems Center, Carnegie Mellon University

• Du Mann

  Data Storage Systems Center Carnegie Mellon University

• Schultz Mark

  Data Storage Systems Center Carnegie Mellon University

関連論文

• Measurement of Domain Wall Mobility in Magneto-Optic Media
• Domain Formation and Erasure in Co/Pt Multilayer Recording Thin Films

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