Abstract
The isobaric heat capacity of LaSrMnFeO5.5 ferrite is investigated within the temperature range of 298.15–673 K by a calorimetric method. On the curve of the dependence of the heat capacity on temperature, the λ-type effect is revealed relating to a phase transition of the second kind. Temperature dependencies of the thermodynamic functions S 0(T), H 0(T) -H 0(298.15), and Φxx(T) are calculated. The temperature dependencies of permittivity and electrical resistance are studied within the temperature range of 303–493 K, and the results show that the composition under study has semiconductor properties.
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References
Portnoi, K.I. and Timofeeva, N.I., Kislorodnye soedineniya redkozemel’nykh elementov. Spravochnik (A Reference Book on Oxygen Compounds of Rare-Earth Elements), Moscow: Metallurgiya, 1986.
Oksidnye materialy v elektronnoi tekhnike. Sbornik statei (A Collection of Papers on Oxide Materials in Electronic Engineering), Moscow: Znanie, 1983.
Kasenov, B.K., Mustafin, E.S., Sagintaeva, Zh.I., Kasenova, Sh.B., and Davrenbekov, S.Zh., Vestn. Kaz. Nats. Univ. im. Al’-Farabi, Ser. Khim., 2010, no. 2, p. 231.
Platunov, E.S., Buravoi, S.E., Kurepin, V.V., and Petrov, G.S., Teplofizicheskie izmereniya i pribory (Thermophysical Measurements and Devices), Leningrad: Mashinostroenie, 1986.
Tekhnicheskoe opisanie i instruktsii po ekspluatatsii IT-s-400 (Technical Description and Instruction Manual of the Heat Capacity Meter IT-s-400), Aktyubinsk: Aktyubinsk Plant “Etalon,” 1986.
Robie, R.A., Hemingway, B.S., and Fisher, J.K., Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 Bar (105 Paskals) Pressure and at Higher Temperatures, Washington: United States Government Printing Office, 1978.
Spiridonov, V.P. and Lopatkin, L.V., Matematicheskaya obrabotka eksperimental’nykh dannykh (Mathematical Processing of the Experimental Data), Moscow: Moscow State University, 1970.
Kasenov, B.K., Edil’baeva, S.T., Kasenova, Sh.B., Sagintaeva, Zh.I., Davrenbekov, S.Zh., Tukhmetova, Zh.K., and Akubaeva, M.A., High Temp., 2010, vol. 48, no. 2, p. 198.
Kumok, V.N., in Pryamye i obratnye zadachi khimicheskoi termodinamiki (Direct and Inverse Problems of the Chemical Thermodynamics), Titov, V.A., Ed., Novosibirsk: Nauka, 1987, p. 108.
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Original Russian Text © B.K. Kasenov, S.Zh. Davrenbekov, Sh.B. Kasenova, Zh.I. Sagintaeva, A.Zh. Abildaeva, B.T. Ermagambet, M.A. Isabaeva, M.O. Turtubaeva, E.Zh. Zhumadilov, 2012, published in Teplofizika Vysokikh Temperatur, 2012, Vol. 50, No. 6, pp. 789–792.
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Kasenov, B.K., Davrenbekov, S.Z., Kasenova, S.B. et al. Thermodynamic and electrophysical properties of LaSrMnFeO5.5 ferrite. High Temp 50, 736–738 (2012). https://doi.org/10.1134/S0018151X12060053
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DOI: https://doi.org/10.1134/S0018151X12060053