2010•Journal of Physics Conference SeriesOpen access

Transition from weak ferromagnetism to metamagnetism in the itinerant-electron system Y1−xLaxCo9Si4

M. Nishiyama, T. Kohara, Hiroyuki Nakamura

Abstract

The magnetism of solid solution Yi 1− x La x Co 9 Si 4 between strongly enhanced Pauli paramagnetic LaCo 9 Si 4 and weakly ferromagnetic YCo 9 Si 4 has been investigated. The Curie temperature T C in the ferromagnetic region and the metamagnetic transition field H M in the paramagnetic region change continuously against x and approach zero at the same composition x ≊ 0.15, suggesting the presence of a critical point from spontaneous to field-induced ferromagnetism.

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Key concepts: Ferromagnetism, Metamagnetism, Condensed matter physics, Paramagnetism, Curie temperature, Magnetism, Pauli exclusion principle, Electron