NDLI: Design of self-organized nanostructures to achieve high blocking temperatures in MgO-based d $^{0}$ ferromagnets

Content Provider	Springer Nature Link
Author	Fukushima, Tetsuya Katayama Yoshida, Hiroshi Seike, Masayoshi Sato, Kazunori
Copyright Year	2013
Abstract	We present a materials design of MgO-based d $^{0}$ ferromagnets with a high blocking temperature (T $_{ B }$) based on multiscale simulations. The chemical pair interactions between the N atoms in Mg(O,N) and the Mg vacancies (V$_{Mg}$) in (Mg,V$_{Mg}$)O were calculated using a generalized gradient approximation, and Monte Carlo simulations of the crystal growth were performed to predict the configurations of the dopant distribution. Our simulations showed that self-organized nanostructures could be formed both in Mg(O,N) and (Mg,V$_{Mg}$)O, which suggests that a high T $_{ B }$ can be obtained in these d $^{0}$ ferromagnets due to the superparamagnetic blocking phenomenon. Furthermore, depending on the crystal growth conditions, it was shown that various self-organized nanostructures, such as three-dimensional nanoclusters and one-dimensional nanowires, could appear.
Starting Page	1807
Ending Page	1811
Page Count	5
File Format	PDF
ISSN	03744884
Journal	Journal of the Korean Physical Society
Volume Number	62
Issue Number	12
e-ISSN	19768524
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-07-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Magnesium oxide Theoretical, Mathematical and Computational Physics Superparamagnetism d $^{0}$ ferromagnetism First-principles calculation Monte Carlo simulation Physics Particle and Nuclear Physics Self-organization
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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