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Title: Estimation of thermomagnetometry method sensitivity for magnetic phase determination
Authors: Astafyev, Alexander Leonidovich
Surzhikov, Anatoly Petrovich
Lysenko, Elena Nikolaevna
Keywords: литий-цинковые ферриты; феррошпинели; магнитометрия; рентгеноструктурный анализ; магнитные фазы
Issue Date: 2016
Publisher: IOP Publishing
Citation: Astafyev A. L. Estimation of thermomagnetometry method sensitivity for magnetic phase determination / A. L. Astafyev, A. P. Surzhikov, E. N. Lysenko // IOP Conference Series: Materials Science and Engineering. — 2016. — Vol. 110 : Radiation-Thermal Effects and Processes in Inorganic Materials (RTEP2015) : International Scientific Conference, 31 August to 10 September 2015, Tomsk, Russia : [proceedings]. — [012090, 5 p.].
Abstract: In this article, the sensitivity of thermomagnetometry method for magnetic phase determination in lithium substituted ferrites was estimated by thermogravimetric analysis in magnetic field of lithium-zinc ferrite and iron dioxide (Li[0.4]Fe[2.4]Zn[0.2]O[4]+[alpha]-Fe[2]O[3]) components mixture with different mass proportions: 2, 4, 6, and 100 mass% Li[0.4]Fe[2.4]Zn[0.2]O[4] phase in total mixture. Thereby, analyzed samples are mixture of magnetic and nonmagnetic phases. Results of thermomagnetometric analysis were supplemented with the X-Ray diffraction analysis data. It was shown that the thermomagnetometry method allows to determine a magnetic phases with mass content not less than 2 mass% in analyzed mixture. In this case, we can clearly estimate the position and intensity of the peak on derivative thermogravimetric curve, which connected with a magnetic phase transition in ferrite at Curie temperature.
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