6533b838fe1ef96bd12a4f64

RESEARCH PRODUCT

Stoichiometry of LiNiO2 Studied by Mössbauer Spectroscopy

Vadim KsenofontovYann GarciaS. ReimanPhilipp GütlichDorothee WalcherN. Doroshenko

subject

CrystallographyFerromagnetismMössbauer effectFerromagnetic material propertiesChemistryJahn–Teller effectMössbauer spectroscopyStoichiometryCharged particleIon

description

From the 61Ni and 57Fe Mossbauer spectroscopy data follows the cationic site assignment in Li1−x Ni1+x O2. Our data explain the ferromagnetic properties of this material because of the appearance of Ni2+ (S = 1) among Ni3+ (S = 1/2) in Ni3+O2 hexagonal planes. We have no evidence for the ferromagnetic interaction between the NiO2 layers through the excess Ni2+ ions substituting the Li+ ions. The presence of Ni2+ found in the Ni3+O2 planes explains the absence of the Jahn-Teller distortions probably because of the electronic transfer between the Ni3+ and Ni2+ ions.

yearjournalcountryeditionlanguage
2002-01-01
https://doi.org/10.1007/978-94-010-0299-8_11