Phase transition in Bi8Fe6Ti3O27 multiferroic ceramics

• Autorzy: Sunanda Patri , Ram Choudhary
• Języki publikacji: EN

Abstrakty

EN

The polycrystalline Bi8Fe6Ti3O27 compound was prepared by a high-temperature solid-state reaction technique. Preliminary structural analysis by X-ray diffraction (XRD) confirms the formation of a single-phase compound in an orthorhombic crystal system at room temperature. The elemental content of the compound was analyzed by EDAX microanalysis. Microstructural analysis by scanning electron microscopy (SEM) shows that the compound has well defined grains, which are distributed uniformly throughout the surface of the pellet sample. Detailed studies of temperature-dependent dielectric response at various frequencies show dielectric anomalies at 380, 389 and 403°C for 10 kHz, 100 kHz, and 1 MHz respectively. The hysteresis loop observed by applying an electric field of 12 kV/cm on the poled sample with smaller remanent polarization supports the existence of ferroelectricity in this material. The value of d33 of the compound was found to be 19 pC/N.

Słowa kluczowe

EN

X-ray diffraction; crystal structure and symmetry; phase transitions

• Czasopismo: Open Physics
• Rocznik: 2008
• Tom: 6
• Numer: 3
• Strony: 450-453

Daty

wydano

2008-09-01

online

2008-07-17

Twórcy

autor

Sunanda Patri

• Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur, 721 302, India

autor

Ram Choudhary

• Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur, 721 302, India,

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Identyfikatory

DOI

10.2478/s11534-008-0064-7