Magnetic properties and local microstructures in Zn-doped YMnO{sub 3}

Journal Article · Mon Apr 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4870455· OSTI ID:22273687

Zhou, G. T.; Zheng, L.; Wu, X. S. ^[1]

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1. Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093 (China)

The hole doping effect on the magnetic properties of multiferroic YMn{sub 1−x}Zn{sub x}O{sub 3} was studied through investigating the local microstructures. Polycrystalline YMn{sub 1−x}Zn{sub x}O{sub 3} samples with x ranging from 0 to 0.22 are synthesized by solid-state reaction method. The x-ray diffraction patterns reveal that YMn{sub 1−x}Zn{sub x}O{sub 3} samples with low Zn{sup 2+} doping concentration (x < 0.1) maintain single phase which show hexagonal structure with space group of P6{sub 3}cm. The temperature dependence of magnetization presents that the magnetic moment at low temperature and the FM transition temperature increase with increasing the doping concentration of Zn{sup 2+}. Meanwhile, ferromagnetism induced by Zn{sup 2+} doping is found to become stronger. EXAFS analysis reveals the in-plane Mn-O{sub P} bond length decreases while the out-of-plane Mn-O{sub A} bond length keeps almost constant. The weak FM order is ascribed to order-to-disorder effect resulting from the diluted exchange interaction among Mn{sup 3+} ions and double-exchange interaction between the mixed valence-state of Mn{sup 3+} and Mn{sup 4+} by hole doping of Zn{sup 2+}.

• OSTI ID: 22273687
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 13; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTROSCOPY
BOND LENGTHS
CONCENTRATION RATIO
DOPED MATERIALS
EXCHANGE INTERACTIONS
FERROMAGNETISM
HEXAGONAL LATTICES
HOLES
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MAGNETIZATION
MANGANATES
MANGANESE IONS
MICROSTRUCTURE
POLYCRYSTALS
TEMPERATURE DEPENDENCE
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY
YTTRIUM COMPOUNDS
ZINC IONS