141 citations · 652 across the 14 of their papers we have counts for
6 papers · 1 filter
Verwey transition in FeO thin films: Influence of oxygen stoichiometry and substrate-induced microstructure
X. H. Liu, A. D. Rata, C. F. Chang +2
We have carried out a systematic experimental investigation to address the question why thin films of FeO (magnetite) generally have a very broad Verwey transition with low…
Lattice structure and magnetization of LaCoO3 thin films
A. D. Rata, A. Herklotz, L. Schultz +1
We investigate the structure and magnetic properties of thin films of the LaCoO compound. Thin films are deposited by pulsed laser deposition on various substrates in order t…
Reversible strain effect on the magnetization of LaCoO3 films
A. Herklotz, A. D. Rata, L. Schultz +1
The magnetization of ferromagnetic LaCoO3 films grown epitaxially on piezoelectric substrates has been found to systematically decrease with the reduction of tensile strain. The ma…
Strain-induced insulator state in La_0.7Sr_0.3CoO_3
A. D. Rata, A. Herklotz, K. Nenkov +2
We report on the observation of a strain-induced insulator state in ferromagnetic La_0.7Sr_0.3CoO_3 films. Tensile strain above 1% is found to enhance the resistivity by several or…
Giant positive magnetoresistance in metallic VOx thin films
A. D. Rata, V. Kataev, D. Khomskii +1
We report on giant positive magnetoresistance effect observed in VOx thin films, epitaxially grown on SrTiO3 substrate. The MR effect depends strongly on temperature and oxygen con…
Growth and properties of strained VOx thin films with controlled stoichiometry
A. D. Rata, A. R. Chezan, T. Hibma +5
We have succeeded in growing epitaxial films of rocksalt VOx on MgO(001) substrates. The oxygen content as a function of oxygen flux was determined using 18O2-RBS and the vanadium…