Title of article
Intermediate structural phases in rare-earth substituted BiFeO3
Author/Authors
Khomchenko، نويسنده , , V.A. and Paixمo، نويسنده , , J.A. and Kiselev، نويسنده , , D.A. and Kholkin، نويسنده , , A.L.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2010
Pages
4
From page
416
To page
419
Abstract
The room-temperature crystal structure and local ferroelectric properties of Bi0.85RE0.15FeO3 (RE = Sm, Gd, Dy) polycrystalline samples have been investigated by X-ray diffraction (XRD) and piezoresponse force microscopy (PFM) techniques. XRD measurements show that the rare-earth substitution causes the transformation of R3c structure typical of BiFeO3 to yield orthorhombic phases with √2a × 2√2a × 2a and √2a × 2a × √2a superlattices (a is the parameter of the cubic perovskite subcell). Results of PFM investigations imply that both the orthorhombic phases are polar. The models describing crystal structure of the phases are discussed.
Keywords
D. Crystal structure , D. Ferroelectricity , A. Ceramics , C. X-ray diffraction , C. Atomic force microscopy
Journal title
Materials Research Bulletin
Serial Year
2010
Journal title
Materials Research Bulletin
Record number
2100013
Link To Document