P. D. Battle, M. A. Green, M. J. Rosseinsky, L. E. Spring, J. F. Vente, P. D. Battle, M. A. Green, J. Lago. A. Mihut, L. E. Spring and J. Singleton
Magnetoresistance is observed in non-ferromagnetic oxides containing FeIV which have magnetic behaviour characteristic of small magnetic clusters.