X-Ray Photoelectron Spectroscopy, Magnetic and Dielectric Studies of PbFe1/2Nb1/2O3 Single Crystals

X-ray photoelectron spectroscopy (XPS), magnetic and dielectric studies were performed for flux grown PbFe 1/2 Nb 1/2 O 3 (PFN) single crystals. The core level XPS spectra show that the Pb, Nb and O ions exist in one valence state while Fe ions in two Fe 2+ and Fe 3+ states. Temperature dependences...

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Bibliographic Details
Published in:Ferroelectrics 2009-01, Vol.391 (1), p.114-121
Main Authors: Kania, A., Talik, E., Kruczek, M.
Format: Article
Language:English
Subjects:
1/2
Condensed matter: electronic structure, electrical, magnetic, and optical properties
dielectric properties
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Exact sciences and technology
Ferroelectricity and antiferroelectricity
Lead iron niobate
magnetic properties
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
multiferroics
PbFe
Phase transitions and curie point
Physics
Pyroelectric and electrocaloric effects
Saturation moments and magnetic susceptibilities
X-ray photoelectron spectroscopy
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Summary:X-ray photoelectron spectroscopy (XPS), magnetic and dielectric studies were performed for flux grown PbFe 1/2 Nb 1/2 O 3 (PFN) single crystals. The core level XPS spectra show that the Pb, Nb and O ions exist in one valence state while Fe ions in two Fe 2+ and Fe 3+ states. Temperature dependences of magnetic susceptibility reveals maximum at 10 K (ZFC) and anomaly at T N = 156 K related to AFM-PM transition. Dielectric and pyroelectric studies point to two ferroelectric phase transitions at 356 K and 376 K. The influence of appearance of the Fe 2+ state on magnetic and semiconductor properties of PFN is discussed.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150190903001805