Magnetization has been measured for polycrystalline samples of LaCo1-xRhxO3 (0 {\leq} x {\leq} 0.9) in order to investigate magnetism induced in the solid solution of two nonmagnetic end phases of LaCoO3 and LaRhO3. It is found that a ferromagnetic transition is observed below 15 K in the range of x from 0.1 to 0.4. The effective Bohr magnetic moment evaluated from the temperature dependence of magnetic susceptibility at around room temperature is independent of x for 0 < x < 0.5 (approximately 3 {\mu}B per formula unit), and rapidly decreases above x = 0.5. On the basis of detailed magnetization measurements, the spin state and magnetic ordering of LaCo1-xRhxO3 are discussed.
@article{arxiv.1107.4840,
title = {Weak Ferromagnetism in LaCo1-xRhxO3: Anomalous Magnetism Emerging between Two Nonmagnetic End Phases},
author = {Shinichiro Asai and Noriyasu Furuta and Yukio Yasui and Ichiro Terasaki},
journal= {arXiv preprint arXiv:1107.4840},
year = {2011}
}
Comments
16 pages, 6 figures, to be published in J. Phys. Soc. Jpn