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Title: Magnetic interaction in oxygenated alpha Fe-phthalocyanines

Alpha iron phthalocyanines (α-FePc) oxygenated at low temperatures were investigated with the help of {sup 57}Fe Mössbauer spectroscopy, magnetization measurements (SQUID) and X-ray diffractometry (XRD). Mössbauer spectroscopy revealed that upon oxygenation of α-FePc, new species were formed which could be associated with Fe{sup III}Pc oxygen adducts. Unexpectedly, magnetically split spectrum of oxygenated α-FePc was observed below 20 K. In-field Mössbauer spectra in a 5 T external magnetic field at 5K and magnetization measurements indicate antiferromagnetic coupling in oxygenated α-FePc.
Authors:
; ;  [1] ; ; ; ; ;  [2] ; ;  [3] ;  [4] ;  [5] ;  [6]
  1. Institute of Chemistry, Eötvös Loránd University, P.O. Box 32, 1512 Budapest (Hungary)
  2. Regional Centre of Advanced Technologies and Materials, Departments of Experimental Physics and Physical Chemistry, Faculty of Science Palacky University, 17. Listopadu 1192/12, 771 46 Olomouc (Czech Republic)
  3. Department of Chemistry, Drexel University, Philadelphia, PA 19104 (United States)
  4. Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, 1117 (Hungary)
  5. Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachi-Oji, Tokyo 192-0397 (Japan)
  6. Department of Chemistry, University of North Carolina, Asheville, NC 28804 (United States)
Publication Date:
OSTI Identifier:
22308106
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1622; Journal Issue: 1; Conference: Conference on Moessbauer spectroscopy in materials science 2014, Hlohovec u Breclavi (Czech Republic), 26-30 May 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTRA; ABSORPTION SPECTROSCOPY; ANTIFERROMAGNETISM; COUPLING; IRON 57; IRON COMPOUNDS; IRON-ALPHA; MAGNETIC FIELDS; MAGNETIZATION; MOESSBAUER EFFECT; OXYGEN; PHTHALOCYANINES; SQUID DEVICES; TEMPERATURE DEPENDENCE; X-RAY DIFFRACTION