R{sub 3}Mn{sub 1.5}CuV{sub 0.5}O{sub 9} (R = Y, Ho, Er, Tm, Yb and Lu) and Lu{sub 3}Mn{sub 3-3x}Cu{sub 2x}V {sub x}O{sub 9}: New noncentrosymmetric oxides related to YMnO{sub 3}

We report formation of new noncentrosymmetric oxides of the formula, R{sub 3}Mn{sub 1.5}CuV{sub 0.5}O{sub 9} for R = Y, Ho, Er, Tm, Yb and Lu, possessing the hexagonal RMnO{sub 3} (space group P6{sub 3} cm) structure. These oxides could be regarded as the x = 0.5 members of a general series R{sub 3}...

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Bibliographic Details
Published in:Materials research bulletin 2007-04, Vol.42 (4)
Main Authors: Surendran, K.P., Mani, Rohini, Gopalakrishnan, J., Ramanujachary, K.V., Lofland, S.E., Green, William L.
Format: Article
Language:English
Subjects:
CHEMICAL PREPARATION
COPPER IONS
DIELECTRIC PROPERTIES
HEXAGONAL LATTICES
MAGNETIC PROPERTIES
MANGANATES
MANGANESE IONS
MATERIALS SCIENCE
OXIDES
SOLID SOLUTIONS
SPACE GROUPS
VANADIUM IONS
X-RAY DIFFRACTION
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Summary:We report formation of new noncentrosymmetric oxides of the formula, R{sub 3}Mn{sub 1.5}CuV{sub 0.5}O{sub 9} for R = Y, Ho, Er, Tm, Yb and Lu, possessing the hexagonal RMnO{sub 3} (space group P6{sub 3} cm) structure. These oxides could be regarded as the x = 0.5 members of a general series R{sub 3}Mn{sub 3-3x}Cu{sub 2x}V {sub x}O{sub 9}. Investigation of the Lu-Mn-Cu-V-O system reveals the existence of isostructural solid solution series, Lu{sub 3}Mn{sub 3-3x}Cu{sub 2x}V {sub x}O{sub 9} for 0 < x {
ISSN:0025-5408
1873-4227
DOI:10.1016/j.materresbull.2006.08.016