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Resulting from the curved thermal profile by near-field transducers, the transition curvature in heat-assisted magnetic recording is one of the critical factors significantly limiting the technology from achieving expected high area density capability. In this paper, we present a systematic micromagnetic modeling study to understand the underlying physics and to arrive at a solution that can correct...
For FePt-L10 granular media, its high anisotropy temperature gradient, ${dH}_{\rm k}/{dT}$, near the Curie temperature is a key motivating factor for its potential high recording area density capability at small grain sizes. The micromagnetic modeling study presented in this letter argues that for today's media with relatively large grain size, if the anisotropy temperature gradient can be relaxed...
With the development of economy, indoor pedestrian streets have become more and more popular in large commercial architectures. The safety of such type of construction has drawn people's attention. Traditional methods for fire protection are difficult to meet the requirement in indoor pedestrian streets due to the large span of the building. Investigation is needed to evaluate and improve the fire...
Heat, or thermal, assisted magnetic recording (HAMR or TAMR), has become a strong candidate as the new recording scheme for future hard disk drive technology. In depth understanding the detailed recording processes and the performance correlation with all the important recording parameters and medium properties is of critical importance for the practical realization of its intended advantages at ultra-high...
Thermal-assisted spin-transfer torque random access memory (STT-RAM) has been considered as a promising candidate of next-generation nonvolatile memory technology. We conducted finite element simulation on thermal dynamics in the programming process of thermal-assisted STT-RAM. Special attentions have been paid to the scalability and design space of the thermal-assist programming scheme by varying...
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