Mild Hydrothermal Synthesis, Crystal Structure, Thermal Behavior, Spectroscopic and Magnetic Properties of (NH4)0.80Li0.20[Fe(AsO4)F]


Autoria(s): Berrocal Torres, Teresa; Mesa Rueda, José Luis; Serrano Larrea, Edurne; Bazán Blau, Begoña del Pilar; Pizarro Sanz, José Luis; Lezama Diago, Luis María; Rojo Aparicio, Teófilo; Arriortua Marcaida, María Isabel
Data(s)

22/04/2016

22/04/2016

03/08/2011

Resumo

postprint

The (NH4)0.80Li0.20[Fe(AsO4)F] compound has been synthesized under mild hydrothermal conditions. The compound crystallize in the orthorhombic Pna21 space group, with cell parameters a= 13.352(9), b= 6.7049(9), c= 10.943(2) Å and Z = 8. The compound belongs to the KTiO(PO4) structure type, with chains alternating FeO4F2 octahedra and AsO4 tetrahedra, respectively, running along the “a” and “b” crystallographic axes. The diffuse reflectance spectrum in the visible region shows the forbidden electronic transitions characteristic of the Fe(III) d5-high spin cation in slightly distorted octahedral geometry. The Mössbauer spectrum at room temperature is characteristic of iron (III) cations. The ESR spectra, carried out from room temperature to 20.0 K, remain isotropic with variation in temperature; the g-value being 1.99(1). Magnetic measurements indicate the predominance of strong antiferromagnetic interactions.

Identificador

Journal of Solid State Chemistry 184(10) : 2623–2628 (2011)

0022-4596

http://hdl.handle.net/10810/17948

10.1016/j.jssc.2011.07.043

Idioma(s)

eng

Publicador

Elsevier

Relação

http://www.sciencedirect.com/science/article/pii/S0022459611004221

Direitos

© <2011> Elsevier Ltd. Full-text reproduced in accordance with the publisher’s self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0

info:eu-repo/semantics/openAccess

Palavras-Chave #hydrothermal synthesis #crystal structure #thermal analysis #spectroscopy #magnetism
Tipo

info:eu-repo/semantics/article