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100 _a20211210a2021 k y0engy50 ba
101 0 _aeng
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aMicrostructure and electromagnetic properties of LiFe5O8 ferrite ceramics prepared from wet- and dry-milled powders
_fE. N. Lysenko, V. A. Vlasov, A. V. Malyshev [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 54 tit.]
330 _aThe effect of dry and wet ball milling of LiFe5O8 ferrite powder on the microstructure and electromagnetic properties of ferrite ceramics was studied using XRD analysis, scanning electron microscopy, dilatometry, thermogravimetry, calorimetry, and measurement of specific magnetization and electrical resistance. The sintering temperature was 1050 °C; the sintering time was 2 h. It was found that ferrite fabricated from dry-milled powder exhibits an ordered [alpha]-LiFe5O8 phase with bulk density of 91%. Its saturation magnetization and Curie temperature are 55 emu/g and 628°С, respectively. Specific electrical resistance is 4•106 [omega] cm. Wet milling in isopropyl alcohol causes formation of a disordered [beta]-LiFe5O8 phase. Ceramics produced by this method shows higher bulk density (97%) and low porosity, and an order of magnitude lower resistivity. Its saturation magnetization and Curie temperature are 51 emu/g and 607°С, respectively.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tCeramics International
463 _tVol. 47, iss. 17
_v[P. 23935-23941]
_d2021
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _asintering
610 1 _aelectrical properties
610 1 _amagnetic properties
610 1 _aferrites
610 1 _aспекание
610 1 _aэлектрические свойства
610 1 _aмагнитные свойства
610 1 _aферриты
701 1 _aLysenko
_bE. N.
_cSpecialist in the field of electrical engineering
_cHead of the laboratory of Tomsk Polytechnic University, Candidate of physical and mathematical sciences
_f1972-
_gElena Nikolaevna
_2stltpush
_3(RuTPU)RU\TPU\pers\32050
701 1 _aVlasov
_bV. A.
_cPhysicist
_cSenior researcher of Tomsk Polytechnic University, Candidate of physical and mathematical sciences
_f1975-
_gVitaliy Anatolievich
_2stltpush
_3(RuTPU)RU\TPU\pers\31405
701 1 _aMalyshev
_bA. V.
_cSpecialist in the field of electrical engineering
_cSenior researcher at Tomsk Polytechnic University, Candidate of Physics and Mathematics (PhD Phys.-Math.)
_f1978-
_gAndrei Vladimirovich
_2stltpush
_3(RuTPU)RU\TPU\pers\30965
701 1 _aSheveleva
_bE. A.
_cspecialist in the field of electrical engineering
_cAssociate Professor of Tomsk Polytechnic University, Candidate of technical sciences
_f1975-
_gElena Aleksandrovna
_2stltpush
_3(RuTPU)RU\TPU\pers\42239
701 1 _aSurzhikov
_bA. P.
_cphysicist
_cProfessor of Tomsk Polytechnic University, doctor of physical and mathematical sciences (DSc)
_f1951-
_gAnatoly Petrovich
_2stltpush
_3(RuTPU)RU\TPU\pers\30237
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИнститут неразрушающего контроля
_bПроблемная научно-исследовательская лаборатория электроники, диэлектриков и полупроводников
_h194
_2stltpush
_3(RuTPU)RU\TPU\col\19033
801 2 _aRU
_b63413507
_c20211210
_gRCR
856 4 _uhttps://doi.org/10.1016/j.ceramint.2021.05.102
942 _cCF