Ferromagnetism of potassium metal under pressure loading into zeolite low-silica X

Shingo Araki, Nguyen Hoang Nam, Kota Shimodo, Takehito Nakano, Yasuo Nozue

Research output: Contribution to journalArticle

Abstract

Potassium metal was loaded into K-form zeolite low-silica X (LSX) under the loading pressure P up to 1.5 GPa. A ferromagnetism is observed at P≈ 0.9 GPa below 13 K. The loading density of K atom n is estimated to be ≈15 per cage at the ferromagnetic loading pressure, and the pressure-derivative loading density dn/dP has a remarkable peak ≈11GPa-1 at P≈0.95 GPa. The density of states at the Fermi energy is estimated to be ≈46 states/eV per cage from the value of dn/dP on a simple model. The observed ferromagnetism is discussed in terms of the Stoner condition and the theory of the revised Rhodes-Wohlfarth plot.

Original languageEnglish
Article number094403
JournalPhysical Review B
Volume99
Issue number9
DOIs
Publication statusPublished - Mar 4 2019

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Zeolites
Ferromagnetism
Silicon Dioxide
ferromagnetism
Potassium
potassium
Metals
Silica
silicon dioxide
metals
Fermi level
plots
rocks
Derivatives
Atoms
atoms
energy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Ferromagnetism of potassium metal under pressure loading into zeolite low-silica X. / Araki, Shingo; Hoang Nam, Nguyen; Shimodo, Kota; Nakano, Takehito; Nozue, Yasuo.

In: Physical Review B, Vol. 99, No. 9, 094403, 04.03.2019.

Research output: Contribution to journalArticle

Araki, Shingo ; Hoang Nam, Nguyen ; Shimodo, Kota ; Nakano, Takehito ; Nozue, Yasuo. / Ferromagnetism of potassium metal under pressure loading into zeolite low-silica X. In: Physical Review B. 2019 ; Vol. 99, No. 9.
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