Phase transitions in TbMnO₃ manganites

Phase transitions in TbMnO₃ manganites

X-ray diffraction and magnetic measurements of polycrystalline and nanosize TbMnO₃ manganites have been performed. All the compounds studied crystallize in the orthorhombic crystal structure (space group Pnma) at room temperature. The nanosize manganites were synthesized with a sol-gel method at d...

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Збережено в:
Бібліографічні деталі
Дата:2012
Автори: Dyakonov, V., Szytuła, A., Szymczak, R., Zubov, E., Szewczyk, A., Kravchenko, Z., Bażela, W., Dyakonov, K., Zarzycki, A., Varyukhin, V., Szymczak, H.
Формат: Стаття
Мова:English
Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2012
Назва видання:Физика низких температур
Теми:
Низкотемпеpатуpный магнетизм
Онлайн доступ:http://dspace.nbuv.gov.ua/handle/123456789/116948
Теги: Додати тег
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Цитувати:Phase transitions in TbMnO₃ manganites / V. Dyakonov, A. Szytuła, R. Szymczak, E. Zubov,A. Szewczyk, Z. Kravchenko, W. Bażela, K. Dyakonov,A. Zarzycki, V. Varyukhin, H. Szymczak // Физика низких температур. — 2012. — Т. 38, № 3. — С. 273-277. — Бібліогр.: 19 назв. — англ.

Репозитарії

Digital Library of Periodicals of National Academy of Sciences of Ukraine
id irk-123456789-116948
record_format dspace
spelling irk-123456789-1169482017-05-19T03:03:28Z Phase transitions in TbMnO₃ manganites Dyakonov, V. Szytuła, A. Szymczak, R. Zubov, E. Szewczyk, A. Kravchenko, Z. Bażela, W. Dyakonov, K. Zarzycki, A. Varyukhin, V. Szymczak, H. Низкотемпеpатуpный магнетизм X-ray diffraction and magnetic measurements of polycrystalline and nanosize TbMnO₃ manganites have been performed. All the compounds studied crystallize in the orthorhombic crystal structure (space group Pnma) at room temperature. The nanosize manganites were synthesized with a sol-gel method at different (800 and 900°C) temperatures. The average size of synthesized nanoparticles (from 45 to 70 nm) was estimated by using the x-ray diffraction and low-temperature adsorption of argon methods. An information on the evolution of properties of TbMnO₃ with changing grain size, temperature and magnetic field was obtained. The crystal structure parameters of nanospecimens change slightly with changing the nanoparticle size. The peculiarities of magnetic ordering in polycrystalline and nanosize TbMnO₃ were compared. Magnetization and the Nèel temperature corresponding to antiferromagnetic ordering of the Tb³⁺ sublattice decrease as the particle size is reduced. The inverse magnetic susceptibility of the nanoparticle samples deviates from the Curie–Weiss law below 50 K, that is connected with the magnetic ordering of the Mn³⁺ moments. Specific heat of the nanosize samples exhibits anomalies related to the magnetic ordering of the Tb³⁺ and Mn³⁺ sublattices. 2012 Article Phase transitions in TbMnO₃ manganites / V. Dyakonov, A. Szytuła, R. Szymczak, E. Zubov,A. Szewczyk, Z. Kravchenko, W. Bażela, K. Dyakonov,A. Zarzycki, V. Varyukhin, H. Szymczak // Физика низких температур. — 2012. — Т. 38, № 3. — С. 273-277. — Бібліогр.: 19 назв. — англ. 0132-6414 PACS: 61.05.cp, 61.46.–w, 75.75.–c, 75.47.Lx, 73.63.Bd http://dspace.nbuv.gov.ua/handle/123456789/116948 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
topic Низкотемпеpатуpный магнетизм
Низкотемпеpатуpный магнетизм
spellingShingle Низкотемпеpатуpный магнетизм
Низкотемпеpатуpный магнетизм
Dyakonov, V.
Szytuła, A.
Szymczak, R.
Zubov, E.
Szewczyk, A.
Kravchenko, Z.
Bażela, W.
Dyakonov, K.
Zarzycki, A.
Varyukhin, V.
Szymczak, H.
Phase transitions in TbMnO₃ manganites
Физика низких температур
description X-ray diffraction and magnetic measurements of polycrystalline and nanosize TbMnO₃ manganites have been performed. All the compounds studied crystallize in the orthorhombic crystal structure (space group Pnma) at room temperature. The nanosize manganites were synthesized with a sol-gel method at different (800 and 900°C) temperatures. The average size of synthesized nanoparticles (from 45 to 70 nm) was estimated by using the x-ray diffraction and low-temperature adsorption of argon methods. An information on the evolution of properties of TbMnO₃ with changing grain size, temperature and magnetic field was obtained. The crystal structure parameters of nanospecimens change slightly with changing the nanoparticle size. The peculiarities of magnetic ordering in polycrystalline and nanosize TbMnO₃ were compared. Magnetization and the Nèel temperature corresponding to antiferromagnetic ordering of the Tb³⁺ sublattice decrease as the particle size is reduced. The inverse magnetic susceptibility of the nanoparticle samples deviates from the Curie–Weiss law below 50 K, that is connected with the magnetic ordering of the Mn³⁺ moments. Specific heat of the nanosize samples exhibits anomalies related to the magnetic ordering of the Tb³⁺ and Mn³⁺ sublattices.
format Article
author Dyakonov, V.
Szytuła, A.
Szymczak, R.
Zubov, E.
Szewczyk, A.
Kravchenko, Z.
Bażela, W.
Dyakonov, K.
Zarzycki, A.
Varyukhin, V.
Szymczak, H.
author_facet Dyakonov, V.
Szytuła, A.
Szymczak, R.
Zubov, E.
Szewczyk, A.
Kravchenko, Z.
Bażela, W.
Dyakonov, K.
Zarzycki, A.
Varyukhin, V.
Szymczak, H.
author_sort Dyakonov, V.
title Phase transitions in TbMnO₃ manganites
title_short Phase transitions in TbMnO₃ manganites
title_full Phase transitions in TbMnO₃ manganites
title_fullStr Phase transitions in TbMnO₃ manganites
title_full_unstemmed Phase transitions in TbMnO₃ manganites
title_sort phase transitions in tbmno₃ manganites
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
publishDate 2012
topic_facet Низкотемпеpатуpный магнетизм
url http://dspace.nbuv.gov.ua/handle/123456789/116948
citation_txt Phase transitions in TbMnO₃ manganites / V. Dyakonov, A. Szytuła, R. Szymczak, E. Zubov,A. Szewczyk, Z. Kravchenko, W. Bażela, K. Dyakonov,A. Zarzycki, V. Varyukhin, H. Szymczak // Физика низких температур. — 2012. — Т. 38, № 3. — С. 273-277. — Бібліогр.: 19 назв. — англ.
series Физика низких температур
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first_indexed 2023-10-18T20:28:41Z
last_indexed 2023-10-18T20:28:41Z
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