Magnetic and Dielectric Properties of Y{sub 3−x}Sm{sub x}Fe{sub 5}O{sub 12} (x = 0.0 to 3.0)

Journal Article · Sun Jul 15 04:00:00 EDT 2018 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-017-4436-3· OSTI ID:22782481

Aakansha,; Deka, Bipul; Ravi, Seenipandian ^[1]

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1. Indian Institute of Technology Guwahati, Department of Physics (India)

Single-phase polycrystalline samples of Y{sub 3−x}Sm{sub x}Fe{sub 5}O{sub 12} (x = 0.0–3.0) were prepared by using a solid-state reaction method. The lattice constant is found to increase from 12.372 Å for x = 0.0 to 12.524 Å for x=3.0. The substitution of Sm{sup 3+} at Y{sup 3+} site is confirmed from the red shift of Raman F{sub 2g} mode. Magnetization loops measured at room temperature and the analysis of initial magnetization curves show that saturation magnetization value decreases with an increase in Sm concentration due to the possible antiferromagnetic interaction. On the other hand, temperature variation of magnetization plots shows that all the samples exhibit ferrimagnetic transition with transition temperature in the range of 550 K for x = 0.0 to 573 K for x=3.0. The dielectric constant increases upon Sm substitution, and the analysis of impedance and dielectric spectra shows the contribution of both grains and grain boundaries.

• OSTI ID: 22782481
• Journal Information: Journal of Superconductivity and Novel Magnetism, Journal Name: Journal of Superconductivity and Novel Magnetism Journal Issue: 7 Vol. 31; ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
CONCENTRATION RATIO
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
DOPED MATERIALS
FERRIMAGNETISM
FERRITE GARNETS
FERRITES
GRAIN BOUNDARIES
IMPEDANCE
LATTICE PARAMETERS
MAGNETIZATION
POLYCRYSTALS
RED SHIFT
SAMARIUM COMPOUNDS
SOLIDS
SPECTRA
SPECTROSCOPY
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS