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Your search keyword '"Suzuki, Naoshi"' showing total 2 results
Start Over Author "Suzuki, Naoshi" Topic ferromagnetism
2 results on '"Suzuki, Naoshi"'

1. A new ferromagnetic material excluding transition metals: CaAs in a distorted zinc-blende structure.

Author

Geshi, Masaaki, Kusakabe, Koichi, Tsukamoto, Hidekazu, and Suzuki, Naoshi

Subjects
FERROMAGNETIC materials, FERROMAGNETISM, TRANSITION metals, ZINC, MAGNETIC materials, FORCE & energy
Abstract

A new ferromagnetic material which does not contain transition metals have been theoretically designed. CaAs in a distorted zinc-blende structure is shown to be ferromagnetic by the first-principles calculation. A tetragonally compressed structure is an energy minimal and has a total magnetic moment of 1 μB per the chemical formula, although a tetragonally expanded energy-minimum structure loses the moment. A guideline to fabricate the ferromagnetic material is discussed. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2005
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2. Size dependence of the magnetic properties in ferrimagnetic rings Mn x R x (x =2–8)

Author

Tonooka, Shun, Kusakabe, Koichi, Nakano, Hiroki, and Suzuki, Naoshi

Subjects
*FERROMAGNETISM, *MAGNETIC properties, *SIZE reduction of materials, *MANGANESE
Abstract

Abstract: Size dependence of the magnetic properties in nanoscale ferrimagnetic rings is investigated by the numerical diagonalization of the Heisenberg model. The field derivative of the magnetization is drastically dependent on size of the ring if the magnetic system has frustration, although the character does not exist in the non-frustrated system. Our numerical data support this tendency that the effect of frustration causes the size dependence of the magnetic properties in the nanoscale ferrimagnetic ring. We also demonstrate that the size dependence caused by frustration is also found in behavior of the translational quantum number of the ground state. [Copyright &y& Elsevier]

Published
2005
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