Study of dielectric and electrical properties of novel lead-free double perovskite oxide

The current work focuses on the synthesis of lead free novel double perovskite oxide and detailed investigation of its dielectric and electrical characteristics. Single phase lead free double perovskite Pr 2 FeCrO 6 (PFCO) is prepared by co-precipitation technique. Structural studies reveal orthorho...

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Bibliographic Details
Published inFerroelectrics Vol. 618; no. 2; pp. 464 - 473
Main Authors Gaikwad, Vishwajit M., Shirbhate, Shraddha C., Acharya, Smita A.
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 25.01.2024
Taylor & Francis Ltd
Subjects
dielectric
Dielectric relaxation
Double Perovskite
Electrical properties
Energy bands
Energy gap
Grains
impedance
Lead free
Perovskites
PFCO
Raman spectroscopy
Room temperature
Spectroscopy
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Summary:The current work focuses on the synthesis of lead free novel double perovskite oxide and detailed investigation of its dielectric and electrical characteristics. Single phase lead free double perovskite Pr 2 FeCrO 6 (PFCO) is prepared by co-precipitation technique. Structural studies reveal orthorhombic structure with Pbnm space group. Scanning electron microscopic study shows mixed type of grains; spherical and rectangular grains forming layered structures with few pores. Bonding features and local structure are analyzed via FTIR and Raman spectroscopy. Optical absorption study show narrow energy band gap of 2.14 eV. Room temperature dielectric studies show colossal dielectric constant (∼10 4 ) with low loss. The dielectric relaxation dynamics are studied in the temperature range; 25° to 200 °C. The detailed investigation of electrical properties and conduction mechanism in PFCO is carried out via impedance spectroscopy.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2023.2273723