Dielectric and Raman studies of Ba0.06(Na1/2Bi1/2)0.94TiO3–NaNbO3 ceramics

• Autorzy: Roy S. K. , Chaudhuri S. , Kotnala R. K. , Singh D. K. , Singh B. P. , Singh S. N. , Chandra K. P. , Prasad K.

Identyfikatory

DOI

10.1515/msp-2016-0041

• Języki publikacji: EN

Abstrakty

EN

In this work the X-ray diffraction, scanning electron microscopy, Raman and dielectric studies of lead free perovskite (1 – x)Ba_0.06(Na_1/2Bi_1/2)_0.94TiO_3–xNaNbO₃ (0 ≤x ≤ 1.0) ceramics, prepared using a standard solid state reaction method, were investigated. X-ray diffraction studies of all the ceramics suggested the formation of single phase with crystal structure transforming from rhombohedral-tetragonal to orthorhombic symmetry with the increase in NaNbO₃ content. Raman spectra also confirmed the formation of solid solution without any new phase. Dielectric studies showed that the phase transition is of diffusive character and diffusivity parameter decreases with increasing NaNbO₃ content. The compositional fluctuation was considered to be the main cause of diffusivity.

Słowa kluczowe

EN

lead-free; structure; dielectric constant; Raman spectroscopy

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2016
• Tom: Vol. 34, No. 2
• Strony: 437--445
• Opis fizyczny: Bibliogr. 40 poz., rys., tab.

Twórcy

autor

Roy S. K.

• Department of Physics, St. Xavier’s College, Ranchi-834 001, India

autor

Chaudhuri S.

• Department of Physics, St. Xavier’s College, Ranchi-834 001, India

autor

Kotnala R. K.

• National Physical Laboratory, New Delhi-110 012, India

autor

Singh D. K.

• National Physical Laboratory, New Delhi-110 012, India

autor

Singh B. P.

• National Physical Laboratory, New Delhi-110 012, India

autor

Singh S. N.

• University Department of Physics, Ranchi University, Ranchi-834 008, India

autor

Chandra K. P.

• Department of Physics, S.M. College, Bhagalpur-812 001, India

autor

Prasad K.

• Aryabhatta Centre for Nanoscience and Nanotechnology, Aryabhatta Knowledge University, Patna-800 001, India
• University Department of Physics, T.M. Bhagalpur University, Bhagalpur 812 007, India

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.