Temperature dependences of the magnetic susceptibility of water-based magnetic fluids

This paper presents the results of a study of the temperature dependences of the magnetic susceptibility of water-based magnetic fluids (magnetic colloids) with magnetite particles stabilized by their electrostatic interaction. The average size of dispersed particles was 8 nm, and the volume concent...

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Egile Nagusiak:	Dikansky, Y. I., Диканский, Ю. И., Ispiryan, A. G., Испирян, А. Г., Kunikin, S. A., Куникин, С. А.
Formatua:	Статья
Hizkuntza:	English
Argitaratua:	AMER SCIENTIFIC PUBLISHERS 2021
Gaiak:	Magnetic fluid Phase transition Magnetic susceptibility Superparamagnetism
Sarrera elektronikoa:	https://dspace.ncfu.ru/handle/20.500.12258/14825
Etiketak:	Etiketa erantsi Etiketarik gabe, Izan zaitez lehena erregistro honi etiketa jartzen!

id	ir-20.500.12258-14825
record_format	dspace
spelling	ir-20.500.12258-148252021-01-25T12:26:15Z Temperature dependences of the magnetic susceptibility of water-based magnetic fluids Dikansky, Y. I. Диканский, Ю. И. Ispiryan, A. G. Испирян, А. Г. Kunikin, S. A. Куникин, С. А. Magnetic fluid Phase transition Magnetic susceptibility Superparamagnetism This paper presents the results of a study of the temperature dependences of the magnetic susceptibility of water-based magnetic fluids (magnetic colloids) with magnetite particles stabilized by their electrostatic interaction. The average size of dispersed particles was 8 nm, and the volume concentration of particles in the selected samples under study was 1.4% and 1.6%. The investigations were carried out over a wide temperature range. The temperature dependence of the susceptibility, for the first time, was obtained in the region of the colloidal phase transition under supercooling of the dispersion medium (water). Significant differences were found between the temperature dependences of the magnetic susceptibility of such magnetic fluids, where as similar dependences have been found for the susceptibility of magnetic hydrocarbon-based fluids. The observed behavior of such dependences near the water phase transition temperature is determined by the changes in the water phase state, heat release and structuring of the colloid as a result of water crystallization. Moreover, it is suggested that a certain impact on the dependence behavior in the region of the colloidal solidification temperature can also come from the process of blocking the Brownian degrees of freedom of a small fraction of large dispersed particles. It is concluded that the observed maxima in the investigated susceptibility temperature dependences in the lower temperature region are due to magnetic transformations in the colloidal zones formed at the solidification front of the disperse medium with a dense packing of single-domain colloidal particles 2021-01-25T12:24:58Z 2021-01-25T12:24:58Z 2020 Статья Dikansky, YI; Ispiryan, AG; Kunikin, SA; Zakharzhevskii, M; Drozdov, AS. Temperature dependences of the magnetic susceptibility of water-based magnetic fluids. - 2020. - JOURNAL OF NANOFLUIDS. - Том: 9. - Выпуск: 2. - Стр.: 90-97 http://hdl.handle.net/20.500.12258/14825 en JOURNAL OF NANOFLUIDS application/pdf AMER SCIENTIFIC PUBLISHERS
institution	СКФУ
collection	Репозиторий
language	English
topic	Magnetic fluid Phase transition Magnetic susceptibility Superparamagnetism
spellingShingle	Magnetic fluid Phase transition Magnetic susceptibility Superparamagnetism Dikansky, Y. I. Диканский, Ю. И. Ispiryan, A. G. Испирян, А. Г. Kunikin, S. A. Куникин, С. А. Temperature dependences of the magnetic susceptibility of water-based magnetic fluids
description	This paper presents the results of a study of the temperature dependences of the magnetic susceptibility of water-based magnetic fluids (magnetic colloids) with magnetite particles stabilized by their electrostatic interaction. The average size of dispersed particles was 8 nm, and the volume concentration of particles in the selected samples under study was 1.4% and 1.6%. The investigations were carried out over a wide temperature range. The temperature dependence of the susceptibility, for the first time, was obtained in the region of the colloidal phase transition under supercooling of the dispersion medium (water). Significant differences were found between the temperature dependences of the magnetic susceptibility of such magnetic fluids, where as similar dependences have been found for the susceptibility of magnetic hydrocarbon-based fluids. The observed behavior of such dependences near the water phase transition temperature is determined by the changes in the water phase state, heat release and structuring of the colloid as a result of water crystallization. Moreover, it is suggested that a certain impact on the dependence behavior in the region of the colloidal solidification temperature can also come from the process of blocking the Brownian degrees of freedom of a small fraction of large dispersed particles. It is concluded that the observed maxima in the investigated susceptibility temperature dependences in the lower temperature region are due to magnetic transformations in the colloidal zones formed at the solidification front of the disperse medium with a dense packing of single-domain colloidal particles
format	Статья
author	Dikansky, Y. I. Диканский, Ю. И. Ispiryan, A. G. Испирян, А. Г. Kunikin, S. A. Куникин, С. А.
author_facet	Dikansky, Y. I. Диканский, Ю. И. Ispiryan, A. G. Испирян, А. Г. Kunikin, S. A. Куникин, С. А.
author_sort	Dikansky, Y. I.
title	Temperature dependences of the magnetic susceptibility of water-based magnetic fluids
title_short	Temperature dependences of the magnetic susceptibility of water-based magnetic fluids
title_full	Temperature dependences of the magnetic susceptibility of water-based magnetic fluids
title_fullStr	Temperature dependences of the magnetic susceptibility of water-based magnetic fluids
title_full_unstemmed	Temperature dependences of the magnetic susceptibility of water-based magnetic fluids
title_sort	temperature dependences of the magnetic susceptibility of water-based magnetic fluids
publisher	AMER SCIENTIFIC PUBLISHERS
publishDate	2021
url	https://dspace.ncfu.ru/handle/20.500.12258/14825
work_keys_str_mv	AT dikanskyyi temperaturedependencesofthemagneticsusceptibilityofwaterbasedmagneticfluids AT dikanskijûi temperaturedependencesofthemagneticsusceptibilityofwaterbasedmagneticfluids AT ispiryanag temperaturedependencesofthemagneticsusceptibilityofwaterbasedmagneticfluids AT ispirânag temperaturedependencesofthemagneticsusceptibilityofwaterbasedmagneticfluids AT kunikinsa temperaturedependencesofthemagneticsusceptibilityofwaterbasedmagneticfluids AT kunikinsa temperaturedependencesofthemagneticsusceptibilityofwaterbasedmagneticfluids
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Temperature dependences of the magnetic susceptibility of water-based magnetic fluids

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