Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/64367
Type: Artigo de periódico
Title: Effect of Ni(II) doping on the structure of L-histidine hydrochloride monohydrate crystals
Author: Remedios, CMR
Paraguassu, W
Lima, JA
Freire, PTC
Mendes, J
Melo, FEA
de Menezes, AS
dos Santos, AO
Cardoso, LP
Miranda, MAR
Abstract: In this paper, we study the effect of Ni(II) doping on the structure of L-histidine hydrochloride monohydrate crystals using x-ray diffraction and Raman spectroscopy. X-ray powder diffraction shows no significant change in the unit cell parameters of the doped single crystal, whereas x-ray multiple diffraction using synchrotron radiation indicates that the Ni ions are located in interstitial positions in the crystal lattice. The temperature-dependent Raman spectra reveal a structural phase transition in the 10-300 K temperature range. The proposed mechanism of this phase transition supports the suggestion that the Ni ions occupy interstitial positions.
Country: Inglaterra
Editor: Iop Publishing Ltd
Rights: fechado
Identifier DOI: 10.1088/0953-8984/20/27/275209
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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