Surendran, KP and Mani, Rohini and Gopalakrishnan, J and Ramanujachary, KV and Lofland, SE and Green, William L (2007) $R_3Mn_{1.5}CuV_{0.5}O_9$ (R = Y, Ho, Er, Tm, Yb and Lu) and $Lu_3Mn_{3-3x}Cu_{2x}V_xO_9$: New noncentrosymmetric oxides related to $YMnO_3$. In: Materials Research Bulletin, 42 (4). pp. 618-625.
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Abstract
We report formation of new noncentrosymmetric oxides of the formula, $R_3Mn_{1.5}CuV_{0.5}O_9$ for R = Y, Ho, Er, Tm, Yb and Lu, possessing the hexagonal $RMnO_3$ (space group $P6_3cm$) structure. These oxides could be regarded as the x = 0.5 members of a general series $R_3Mn_{3-3x}Cu_{2x}V_xO_9$. Investigation of the $Lu-Mn-Cu-V-O$ system reveals the existence of isostructural solid solution series, $Lu_3Mn_{3-3x}Cu_{2x}V_xO_9$ for $0 < x \leq 0.75$. Magnetic and dielectric properties of the oxides are consistent with a random distribution of $Mn^{3+}$, $Cu^{2+}$ and $V^{5+}$ atoms that preserve the noncentrosymmetric RMnO3 structure.
Item Type: | Journal Article |
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Publication: | Materials Research Bulletin |
Publisher: | Elsevier |
Additional Information: | Copyright of this article belongs to Elsevier. |
Keywords: | Oxides;Chemical synthesis;X-ray diffraction;Magnetic properties |
Department/Centre: | Division of Chemical Sciences > Solid State & Structural Chemistry Unit |
Date Deposited: | 30 May 2008 |
Last Modified: | 19 Sep 2010 04:45 |
URI: | http://eprints.iisc.ac.in/id/eprint/14126 |
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