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Crystallographic and magnetic investigations of textured bismuth ferrite lead titanate layers

DOI: 10.1088/2053-1591/aae0a9 DOI Help

Authors: Meghdad Palizdar (University of Leeds; GPGIndustrial) , Chris M. Fancher (Oak Ridge National Lab) , Dhiman Mallick (Tyndall National Institute University College Cork) , Tuhin Maity (Tyndall National Institute University College Cork; University of Cambridge) , Saibal Roy (Tyndall National Institute University College Cork) , Jacob L. Jones (North Carolina State University Raleigh) , Tim P. Comyn (University of Leeds) , Ender Suvaci (Eskisehir Technical University) , Andrew J. Bell (University of Leeds)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Materials Research Express , VOL 5

State: Published (Approved)
Published: September 2018

Abstract: In present work we demonstrate the synthesis of textured 60BiFeO3–40PbTiO3 (60:40 BFPT) by using the templated grain growth technique with platelets of BaTiO3. Synthesised 60:40 BFPT has been examined by High-energy x-ray diffraction utilizing a synchrotron x-ray source. The crystallographic structure refinement results revealed the co-existence of monoclinic and tetragonal phases. By employing an external electric field, the mixed monoclinic/tetragonal phases transformed to the predominantly tetragonal phase. In addition, a crystallographic texture refinement was completed on unpoled state of 60:40 BFPT which showed the sample had 1.3 multiples of random distribution (MRD) $\{100\}$ crystallographic textured in tetragonal phase. However, magnetic measurements showed isotropic ferromagnetism for the sample which is not in agreement with the crystallographic texture properties of the sample. Low temperature magnetic transition has been found in zero field cooled—field cooled (ZFC-FC) measurements. This could be due to the possible existence of a secondary magnetic phase, which dominated the magnetic result.

Journal Keywords: texture; synchrotron; phase transformation; ferromagnetic

Subject Areas: Materials, Physics

Instruments: I15-Extreme Conditions