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 TVT, 2015, Volume 53, Issue 4, Pages 636–639 (Mi tvt5756)

Short Communications

Heat capacity of nanocrystalline bismuth ferrite

S. N. Kallaevab, Z. M. Omarovb, D. K. Palchaeva, M. Kh. Rabadanova, Zh. Kh. Murlievaa, M. P. Faradzhevaa, S. A. Sadykova

a Daghestan State University, Makhachkala
b Daghestan Institute of Physics after Amirkhanov

Abstract: The heat capacity of the nanocrystalline multiferroic $\mathrm{BiFeO}_3$ was studied in a wide temperature interval of $150$$800 K. It was found that the heat capacity nanocrystalline of bismuth ferrite in the temperature range of 350$$570$ K is noticeably larger than that of the microcrystalline sample. It was shown that the temperature dependence of the excess heat capacity is due to the manifestation of the Schottky effect for the three-level states appearing as a result of the structural distortions. The anomaly of the heat capacity typical for the phase transition, the manifestation of which depends on crystallite sizes, was discovered in the temperature range of $T \approx 720$$750$ K.

DOI: https://doi.org/10.7868/S0040364415040158

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English version:
High Temperature, 2015, 53:4, 601–604

Bibliographic databases:

UDC: 536.631

Citation: S. N. Kallaev, Z. M. Omarov, D. K. Palchaev, M. Kh. Rabadanov, Zh. Kh. Murlieva, M. P. Faradzheva, S. A. Sadykov, “Heat capacity of nanocrystalline bismuth ferrite”, TVT, 53:4 (2015), 636–639; High Temperature, 53:4 (2015), 601–604

Citation in format AMSBIB
\Bibitem{KalOmaPal15} \by S.~N.~Kallaev, Z.~M.~Omarov, D.~K.~Palchaev, M.~Kh.~Rabadanov, Zh.~Kh.~Murlieva, M.~P.~Faradzheva, S.~A.~Sadykov \paper Heat capacity of nanocrystalline bismuth ferrite \jour TVT \yr 2015 \vol 53 \issue 4 \pages 636--639 \mathnet{http://mi.mathnet.ru/tvt5756} \crossref{https://doi.org/10.7868/S0040364415040158} \elib{http://elibrary.ru/item.asp?id=23908343} \transl \jour High Temperature \yr 2015 \vol 53 \issue 4 \pages 601--604 \crossref{https://doi.org/10.1134/S0018151X1504015X} \isi{http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&DestLinkType=FullRecord&DestApp=ALL_WOS&KeyUT=000360082400024} \elib{http://elibrary.ru/item.asp?id=24942310} \scopus{http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-84940182192} 

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This publication is cited in the following articles:
1. S. H. Gadzhimagomedov, N. M.-R. Alikhanov, R. M. Emirov, D. K. Palchaev, Zh. Kh. Murlieva, M. Kh. Rabadanov, S. A. Sadykov, M. M. Khamidov, A. D. H. Hashafa, “Structure and properties of nanostructured $\mathrm{YBa_2Cu_3O_{7-\delta}, BiFeO_3}$, and $\mathrm{Fe_3O_4}$”, Semiconductors, 51:13 (2017), 1686–1691
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