najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2016-7-4-613-617najo-1251Research ArticleСтатьиDielectric relaxation and charge transport process in PrCrO3 nano-ceramicDielectric relaxation and charge transport process in PrCrO3 nano-ceramicSahaSujoySahaSujoy

Department of Physics

93/1, Acharya Prafulla Chandra Road, Kolkata-700009

Department of Physics

93/1, Acharya Prafulla Chandra Road, Kolkata-700009

DuttaAloDuttaAlo

Department of Condensed Matter Physics and Material Sciences

Block-JD, Sector-III, Salt Lake, Kolkata-7000106

Department of Condensed Matter Physics and Material Sciences

Block-JD, Sector-III, Salt Lake, Kolkata-7000106

alodutta@yahoo.comMukhopadhyayP. K.MukhopadhyayP. K.

Department of Physics

93/1, Acharya Prafulla Chandra Road, Kolkata-700009

Department of Physics

93/1, Acharya Prafulla Chandra Road, Kolkata-700009

SinhaT. P.SinhaT. P.

Department of Condensed Matter Physics and Material Sciences

Block-JD, Sector-III, Salt Lake, Kolkata-70001

Department of Condensed Matter Physics and Material Sciences

Block-JD, Sector-III, Salt Lake, Kolkata-7000106

Bose InstituteBose InstituteS. N. Bose National Centre for Basic SciencesS. N. Bose National Centre for Basic Sciences20162208202574613617Copyright © Saha S., Dutta A., Mukhopadhyay P.K., Sinha T.P., 20252025Saha S., Dutta A., Mukhopadhyay P.K., Sinha T.P.Saha S., Dutta A., Mukhopadhyay P.K., Sinha T.P.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1251

In this work we have investigated the frequency dependent dielectric properties of PrCrO3 nano-ceramics using alternating current impedance spectroscopy. The material was synthesized by the sol–gel process. The Rietveld refinement of the X-ray diffraction data suggests single phase formation of the material with Pnma space group. The observed structure is substantiated by Raman spectrum of the sample. The ac conductivity follows the power law. The most probable relaxation frequencies at different temperatures were found to obey Arrhenius’ law.

In this work we have investigated the frequency dependent dielectric properties of PrCrO3 nano-ceramics using alternating current impedance spectroscopy. The material was synthesized by the sol–gel process. The Rietveld refinement of the X-ray diffraction data suggests single phase formation of the material with Pnma space group. The observed structure is substantiated by Raman spectrum of the sample. The ac conductivity follows the power law. The most probable relaxation frequencies at different temperatures were found to obey Arrhenius’ law.

dielectric propertiessol-gel processX-ray diffractiondielectric propertiessol-gel processX-ray diffractionAlo Dutta thanks to Department of Science & Technology of India for providing the financial support through DST Fast Track Project under Grant No. SB/FTP/PS–175/2013Alo Dutta thanks to Department of Science & Technology of India for providing the financial support through DST Fast Track Project under Grant No. SB/FTP/PS–175/2013.ReferencesShen Y., Liu M., San T.H., Jiang P. Preparation, Electrical Conductivity, and Thermal Expansion Behavior of Dense Nd1−xCaxCrO3 Solid Solutions. J. Am. Ceram. Soc., 2009, 92, P. 2259-?2264.Shen Y., Liu M., San T.H., Jiang P. Preparation, Electrical Conductivity, and Thermal Expansion Behavior of Dense Nd1−xCaxCrO3 Solid Solutions. J. Am. Ceram. Soc., 2009, 92, P. 2259-?2264.Gordon G.D., Hornrcich R.M., Shtrikman S., Wanklyn B.M. Magnetization studies in the rare-earth orthochromites. V. TbCrO3 and PrCrO. Phys. Rev. B, 1976, 13, P. 3012–3017.Gordon G.D., Hornrcich R.M., Shtrikman S., Wanklyn B.M. Magnetization studies in the rare-earth orthochromites. V. TbCrO3 and PrCrO. Phys. Rev. B, 1976, 13, P. 3012–3017.Prasad B.V., Rao G.N., Chen J.W., Babu D.S. Relaxor ferroelectric like giant permittivity in PrCrO3 semiconductor ceramics. Mater. Chem. Phys., 2011, 126, P. 918–921.Prasad B.V., Rao G.N., Chen J.W., Babu D.S. Relaxor ferroelectric like giant permittivity in PrCrO3 semiconductor ceramics. Mater. Chem. Phys., 2011, 126, P. 918–921.Zhang Y., Yao C., Fan Y,. Zhou M. One-step hydrothermal synthesis, characterization and magnetic properties of orthorhombic PrCrO3 cubic particles. Mater. Res. Bull., 2014, 59, P. 387–393.Zhang Y., Yao C., Fan Y,. Zhou M. One-step hydrothermal synthesis, characterization and magnetic properties of orthorhombic PrCrO3 cubic particles. Mater. Res. Bull., 2014, 59, P. 387–393.Jonscher A.K. Universal relaxation law. Chelsea Dielectrics Press, London, 1996.Jonscher A.K. Universal relaxation law. Chelsea Dielectrics Press, London, 1996.

The authors declare that there are no conflicts of interest present.