Electrical transport, magnetism, and spin-state configurations of high-pressure phases of FeS

Article

关键词: DIAMOND-ANVIL CELL;    MOSSBAUER-SPECTROSCOPY;    TEMPERATURE;   

DOI  :  10.1103/PhysRevB.60.4401

来源: SCIE

【 摘 要 】

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 Fe-57 Mossbauer spectroscopy and resistance measurements on samples pressurized in miniature gem-anvil pressure cells to similar 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 similar to 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. [S0163-1829(99)01633-1].

【 授权许可】

Free