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Type: Artigo
Title: Magnetic Phase Diagram Of The Organic Antiferromagnet F4bimnn
Author: Adriano C.
Freitas R.S.
Paduan-Filho A.
Pagliuso P.G.
Oliveira N.F.
Lahti P.M.
Abstract: We present a combination of heat capacity and ac susceptibility measurements as a function of temperature and field, of a single crystal of the radical 2-(4,5,6,7-tetrafluorobenzimidazol-2-yl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-3-oxide-1-oxyl. Our results confirm a zero-field Néel temperature at T N(0)=0.73K and allow the determination of the critical field parameters Hc(||)=170Oe and Hc(⊥)=306Oe. Assuming the previously determined 1-D intrachain ferromagnetic exchange interaction of Jintra/k =+22K between radicals, the interchain antiferromagnetic interaction is calculated as zJinter/k ∼-0.03K. © 2017 Elsevier Ltd.
Subject: Antiferromagnetism
Heat Capacity
Molecular Magnetism
Phase Diagram
Editor: Elsevier Ltd
Rights: fechado
Identifier DOI: 10.1016/j.poly.2017.01.055
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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