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KR: Fachverband Kristallographie
KR 10: Poster: Multiferroics (with MA, DF, KR, DS)
KR 10.78: Poster
Tuesday, March 23, 2010, 10:45–13:45, Poster A
Magnetic and Structural Properties of La1−xThxCrO3 and LaCr1−yTiyO3 — •P. Reuvekamp1, R. K. Kremer1, and F. S. Razavi2 — 1Max Planck Institut fuer Festkoerperforschung, — 2Department of Physics, Brock University, St. Catharines, Ontario, L2S 3A1, Canada
The magnetic properties of ceramic samples of La1−xThxCrO3 and LaCr1−y TiyO3 were investigated. In order to improve the chemical homogeneity and stoichiometry, the ceramic samples were prepared by the citrate-pyrolysis synthesis route. X-ray investigations of these samples revealed that all the phases maintained their orthorhombic structure, however with different mass densities. The substitution of Th for La does not have effect on the magnetic properties of LaCrO3 with the Néel temperature remaining close to 290 K whereas, replacing Ti for Cr reduces the Néel temperature to a minimum of 237 K for y = 0.2.