Pressure dependence of magnetic ordering temperature for decamethylferrocenium tetracyanoethanide

Z. J. Huang, Feng Chen, Y. T. Ren, Y. Y. Xue, C. W. Chu, J. S. Miller

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

It has been demonstrated that the linear-chain charge-transfer salt, decamethylferrocenium tetracyanoethanide (DMeFc)(TCNE), is a ferromagnet with a transition temperature of ∼4.8 K. This low-temperature 3D ordering has been attributed to a strong intrachain and a weak interchain interaction. To study these interactions, we have determined the Tc up to 20 kbar by measuring the ac susceptibility χ at low frequency. Our results show that the Tc increases with pressure at a rate of ∼0.22 K/kbar, while the χ peak indicative of the ferromagnetic transition continues to decrease rapidly. A small peak was also detected above the main transition at pressures above 3 kbar. This new peak persists even after the pressure is removed. The result from dc magnetization suggests that this corresponds to a metamagnetic state. For the first time, we have observed pressure-induced phase-transition in this material.

Original languageEnglish
Pages (from-to)6563-6565
Number of pages3
JournalJournal of Applied Physics
Volume73
Issue number10
DOIs
Publication statusPublished - 1993

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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