1. Nitride tuning of lanthanide chromites.
- Author
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Black, Ashley P., Johnston, Hannah E., Oró-Solé, Judith, Bozzo, Bernat, Ritter, Clemens, Frontera, Carlos, Attfield, J. Paul, and Fuertes, Amparo
- Subjects
PEROVSKITE ,NITRIDES ,RARE earth metals ,CHROMITE ,AMMONOLYSIS ,SUBSTITUTION reactions ,CHEMICAL precursors - Abstract
LnCrO
3−x Nx perovskites with Ln = La, Pr and Nd and nitrogen contents up to x = 0.59 have been synthesised through ammonolysis of LnCrO4 precursors. These new materials represent one of the few examples of chromium oxynitrides. Hole-doping through O2− /N3− anion substitution suppresses the magnetic transition far less drastically than Ln3+ /M2+ (M = Ca, Sr) cation substitutions because of the greater covalency of metal–nitride bonds. Hence, nitride-doping is a more benign method for doping metal oxides without suppressing electronic transitions. [ABSTRACT FROM AUTHOR]- Published
- 2016
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