Magnetic transitions in a molecular metal with embedded local moments: Cu(pc)I

Michael Y. Ogawa*, Sharon M. Palmer, Jens Martinsen, Judith L. Stanton, Brian M. Hoffman, James A. Ibers, Soonchil Lee, Michael Yudkowsky, William P. Halperin

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

We discuss the low temperature magnetic properties of (phthalocyaninato)-copper(II) iodide (Cu(pc)I). This molecular metal contains conductive stacks that incorporate a one-dimensional array of local Cu+2 moments strongly coupled to conduction electrons. Below 20K, the EPR g-value of the coupled spin system increases anomalously and at 8K the EPR signal broadens abruptly and becomes unobservable. Anomalies in the proton NMR spin-lattice relaxation times are observed at the transition temperature. Preliminary EPR experiments conducted on a newly synthesized series of materials, CuxNi1-x(pc)I, indicate the existence of a similar low temperature transition in the presence of various concentrations of loca moments.

Original languageEnglish (US)
Pages (from-to)781-785
Number of pages5
JournalSynthetic Metals
Volume19
Issue number1-3
DOIs
StatePublished - Mar 1987

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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