Document Type

Article

Publication Date

8-15-1999

Keywords

FeS, Spin-state configuration of FeS

Abstract

Both the nature of the electrical transport and magnetism of high-pressure phases of FeS have been elucidated in relation to the spin-state configuration of Fe. This has been achieved by combined 57FeMössbauer spectroscopy and resistance measurements on samples pressurized in miniature gem-anvil pressure cells to ∼12 GPa in the range 300–5 K. Hexagonal FeS in the range 3–7 GPa exhibits magnetic nonmetallic behavior, whereas monoclinic FeS beyond ∼7 GPa is diamagnetic and nonmetallic. This is compelling experimental evidence to show that, along the room-temperature isotherm, hexagonal FeS has thermally activated charge carriers and a high-spin magnetic-electronic configuration, whereas monoclinic FeS adopts a magnetically quenched low-spin state and concomitant filled valence band.

Publication Title

Physical Review B

Volume

60

Issue

7

First Page

4401

DOI

10.1103/PhysRevB.60.4401

Required Publisher's Statement

©1999 American Physical Society

https://doi.org/10.1103/PhysRevB.60.4401

Subjects - Topical (LCSH)

Mössbauer spectroscopy; Antiferromagnetism; Semiconductors

Genre/Form

articles

Type

Text

Rights

Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author’s written permission.

Language

English

Format

application/pdf

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