57Fe Mössbauer spectroscopy on the cyclic spin-cluster Fe6(tea)6(CH3OH)6期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

57Fe Mössbauer spectroscopy on the cyclic spin-cluster Fe6(tea)6(CH3OH)6

Authors:	J. Kreitlow J. Litterst S. Süllow B. Pilawa

Affiliation:	1. Institut für Physik der Kondensierten Materie, TU Braunschweig, 38106, Braunschweig, Germany 2. Physikalisches Institut, Universit?t Karlsruhe (TH), 76128, Karlsruhe, Germany

Abstract:	We present ⁵⁷Fe Mössbauer spectroscopy experiments on the cyclic spin-cluster Fe₆(tea)₆(CH₃OH)₆ (tea = triethanolaminato(-3)). In former studies, the spin cluster has been treated as a homogenous, quasi-one-dimensional spin S=5/2 Heisenberg antiferromagnet. Our experiments reveal spectra, which consists of two different quadrupolar doublets. In consequence, there are two different Fe sites among the hexanuclear iron spin-cluster.

Keywords:	⁵⁷Fe M?ssbauer spectroscopy cyclic spin-cluster quadrupolar doublets
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