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R-site cation randomness effect in the A-site ordered Y0.5La0.5BaMn2O6 compound.
- Source :
-
Chinese Physics B . 2013, Vol. 22 Issue 7, p1-4. 4p. - Publication Year :
- 2013
-
Abstract
- The R/Ba-ordered and R-site mixed compound Y0.5La0.5BaMn2O6 is synthesized, in which (Y, La) and Ba are regularly arranged, while Y and La randomly occupy the R-site. Y0.5La0.5BaMn2O6 has a tetragonal unit cell with a space group of P4/mmm. A structural transition between tetragonal and orthorhombic is observed at about 325 K by X-ray powder diffraction (XRD). Thermal magnetic measurement shows the occurrence of an antiferromagnetic transition at the temperature TN ~ 190 K. Anomalies in magnetization, resistivity and lattice parameters observed around 340 K indicate a charge/orbital order transition accompanying the structural phase transition. The R-site randomness effect is discussed to interpret the different properties of Y0.5La0.5BaMn2O6 between NdBaMn2O6 and SmBaMn2O6. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16741056
- Volume :
- 22
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Chinese Physics B
- Publication Type :
- Academic Journal
- Accession number :
- 90209448
- Full Text :
- https://doi.org/10.1088/1674-1056/22/7/077502