• Proceedings of the Korean Magnestics Society Conference
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• 2002.12a
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• pp.126-127
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• 2002

현재 광 자기 디스크에 대한 연구는 두 층으로 구성된 기록 층들을 이용하여 기록 층에 기록된 매우 작은 마크(0.1 um이하)를 리드아웃 층에서 도메인을 확장하여 재생 시 큰 신호를 얻는 도메인 확장형 광자기디스크(Magnetic AMpligying Magneto-Optical disk)에 대한 연구가 진행되고 있다[1]. 신호 재생시 레이저빔을 디스크에 집속시키면, 리드아웃 층의 스팟의 온도가 큐리 온도(Curie Temperature)까지 올라가게 되며, 이때 기록 층으로부터의 누설 자장에 의해 기록 마크 크기의 도메인이 리드아웃 층에 형성된다. (중략)

• Journal of the Korean Magnetics Society
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• v.14 no.2
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• pp.65-70
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• 2004

Read out signal and temperature distribution of magnetic amplifying magnetooptical disk were studied. Temperature distribution of recording layer and adjacent layers were calculated when the disk was at rest. Mark size, length and location were simulated from a chain of recording beam pulses. In addition, signal amplitude depending on the shape of the marks, readout signals from the recording layer and amplified marks of the readout layer, were simulated. Simplified thermal conduction model was used to calculate the temperature distribution of recording and adjacent layers as a function of time as well as to calculate the mark size, length and location. Readout signal was calculated by the convolution of the disk reflectivity and the Gaussian beam intensity. Readout signal from the mark in the readout layer amplified to the size of the laser beam fumed out to be twice as large as the signal from the crescent shaped mark in the recording layer.