Ranjan, Rajeev and Garg, Rohini and Senyshyn, Anatoliy and Hegde, MS and Ehrenberg, Helmut and Boysen, Hans (2009) Magneto-structural study of a Cr-doped CaRuO3. In: Journal Of Physics-Condensed Matter, 21 (32).
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Temperature-dependent neutron powder diffraction, magnetization and XPS studies were carried out on an optimally Cr-doped CaRuO3, i.e. CaRu0.85Cr0.15O3 (CRC-15). XPS data revealed that Cr exist in 3+ and 6+ oxidation states. The charge dissociation preserves the overall 4+ nominal charge of the Ru site. Although ferromagnetic correlations develop around 100 K, the system exhibits a large coercive field below 50 K. The unit cell volume exhibits negative thermal expansion below 50 K since the lattice expansion due to the magnetostrictive effect outweighs the thermal contraction due to the phonon-driven mechanism.
|Item Type:||Journal Article|
|Additional Information:||Copyrights of this article belongs to Institute of Physics.|
|Department/Centre:||Division of Physical & Mathematical Sciences > Mathematics|
|Date Deposited:||31 Dec 2009 07:00|
|Last Modified:||19 Sep 2010 05:40|
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