• Journal of Magnetics
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• v.5 no.4
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• pp.143-146
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• 2000

In this study, the magnetic properties of CoCrPt films (far longditudinal recording) on a novel VMn underlayer were measured and compared with similar films on conventional Cr underlayers. It was found that the VMn film had (200) preferred orientation and the lattice constant was about 0.2967 nm, which is slightly larger than that of the Cr film, 0.2888 m. The grain size of the VMn film was 9.8 nm at 30 m thickness, about 39% smaller than that of a similarly deposited Cr. The CoCrPt/VMn films showed higher coercivity in comparison with the CoCrPt/Cr films. The coercivity increase is attributed to the increased Co (11.0) texture, improved lattice matching between Co (11.0) and VMn (200), and lower stacking fault density. V or Mn must have diffused into the CoCrPt magnetic layer uniformly rather than preferentially along grain boundaries. This reduced Ms at higher substrate temperature.

• Korean Journal of Culture and Social Issue
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• v.29 no.2
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• pp.223-252
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• 2023

The aim of this study is to examine the longitudinal mediation effect of coping strategies(emotion-focused, problem-focused, and maladaptive) on the relationship between perceived stress during the COVID-19 andemic and psychological distress(negative affect, depression, anxiety, and anger). ). Also, This study sought to find generational differences between coping strategies used during the COVID-19 pandemic. The participants were 941 adult aged between twenties and seventies. The final participants were recruited on two separated longitudinal time points, Time 1 and Time 2. The result were as follows: Only Maladaptive coping strategy(Time 2) had a mediating effect on the relationship between COVID-19 stress(Time 1) and psychological distress(Time 2). . The result of the generation-based multi-group analysis did not yield significant differences in the use of coping strategies. This study is meaningful that it longitudinally examined the psychological distress of adults during the COVID-19 pandemic. Implications, limitations and directions for future research are presented.