Synthesis and multiferroic properties of M-type SrFe12O19 hexaferrite ceramics

Kostishyn, V.G.; Panina, L.V.; Кожитов, Л. В.; Timofeev, A.; Kovalev, A. N.

doi:10.1016/j.jallcom.2015.05.024

Cited by 60 publications

(19 citation statements)

References 24 publications

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“…This also makes it possible to realize an electrical control of the magnetization, which is important for device miniaturization. In [21], a large change in magnetization loop of SrM hexaferrite ceramics caused by the applied electric field was reported. Similar results for BaFe 12 O 19 are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…This generated a practical interest in hexaferrite ferroelectrics which can be promising candidates for multiferroics operating at room temperature and low fields. On the other hand, co-existence of large ferroelectricity and strong ferrimagnetism have been reported for single-phase SrFe 12 [21]. All these systems belong to M-type hexaferrites having a collinear ferrimagnetic structure (see review in [22]) so the Dzyaloshinskii-Moriya mechanism could not be responsible for dual ferroic properties.…”

Section: Introductionmentioning

confidence: 99%

“…All these systems belong to M-type hexaferrites having a collinear ferrimagnetic structure (see review in [22]) so the Dzyaloshinskii-Moriya mechanism could not be responsible for dual ferroic properties. It was proposed that the electrical polarization in this case is ascribed to a geometrical structural transition occurring due to the O-octahedral distortion below the electric Curie temperature [18][19][20][21]. In the present work, a modified ceramic technique was used to sintering BaFe 12 O 19 , PbFe 12 O 19 , and SrFe 12 O 19 M-type hexaferrites with enhanced electrical resistivity in order to investigate their electric and magnetic ordering and ME coupling.…”

Section: Introductionmentioning

confidence: 99%

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Dual ferroic properties of hexagonal ferrite ceramics BaFe12O19 and SrFe12O19

Kostishyn

Панина

Timofeev

et al. 2016

Journal of Magnetism and Magnetic Materials

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dual ferroic properties of hexagonal ferrite ceramics BaFe12O19 and SrFe12O19

Kostishyn

Панина

Timofeev

et al. 2016

Journal of Magnetism and Magnetic Materials

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“…Этот эффект может быть объяснен увеличением степени поляризации локальных спинов Fe 3+ при добавлении в систему энергии электрического поля. Интересно заметить, что поликристалл на основе незамещенного SrFe 12 O 19 , полученного по аналогичной технологии, обладает примерно такой же величиной маг-нитоэлектрического эффекта [35]. Для образца с x = 0.1 спонтанная намагниченность была больше и составила 52.6 emu/g, что соответствует спонтанному атомному …”

Section: методика экспериментаunclassified

Мультиферроидные свойства и структурные особенности Al-замещенных гексаферритов бария M-типа

Труханов¹,

Труханов²,

Костишин³

et al. 2017

Физика Твердого Тела

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Выполнены прецизионные исследования кристаллической и магнитной структуры замещенных гексаферритов бария M-типа BaFe12-xAlxO19 (0.1≤ x≤1.2) методом порошковой дифракции нейтронов в интервале температур 300-730 K. Исследованы электрическая поляризация и намагниченность, а также магнитоэлектрический эффект рассматриваемых составов в электрическом (до 110 kV/m) и магнитном (до 14 T) полях при комнатной температуре. Установлено сохранение коллинеарной ферримагнитной структуры с замещением. Обнаружено наличие спонтанной поляризации и сильной взаимосвязи диэлектрической и магнитной подсистем при комнатной температуре. Величина магнитоэлектрического эффекта составляет в среднем около 5%, несколько увеличиваясь с ростом концентрации катионов алюминия. Прецизионные структурные исследования позволили установить причину и механизм возникновения спонтанной поляризации в замещенных гексаферритах бария M-типа BaFe12-xAlxO19 (x≤1.2) с коллинеарной ферримагнитной структурой. Работа выполнена при софинансировании Министерства образования и науки РФ по программе повышения конкурентоспособности НИТУ "МИСиС" среди ведущих мировых научно-образовательных центров (N К4-2015-040 и К3-2016-019) и при поддержке грантов БРФФИ (N Ф15Д-003) и ОИЯИ (N 04-4-1121-2015/2017). Л.В. Панина благодарит правительство РФ за поддержку в рамках государственного заказа по организации научной работы. DOI: 10.21883/FTT.2017.04.44274.328

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“…The hexagonal ferrite type-M is denoted by the formula MFe 12 O 19 , where M is a divalent metal ion, typically Sr 2+ , Ba 2+ , or Pb 2+ [2]. Since its discovery in 1950 [3], the hexagonal ferrite type-M SrFe 12 O 19 has played an important role in hard magnetic materials and has been studied for decades due to its good chemical stability, ferrimagnetic behavior, high Curie temperature, high saturation magnetization, high coercivity, high magneto-crystalline anisotropy (MCA), and it is inexpensive compared to similar compounds [4][5][6]. As it has magnetization values of about 60 Am 2 /kg and coercivity of 4.37 × 10 5 A/m, it is widely used in magnetic recording material, data storage devices [7], magneto-optical recordings, microwave devices [8], permanent magnets, and electromagnetic devices [9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Sonication Output Power on the Crystal Structure and Magnetism of SrFe12O19 Nanoparticles

et al. 2018

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Abstract:We reported the effect of the sonication output power (SOP), from 120, 180, to 240 W, on the crystal structure, morphology, and magnetic properties of SrFe 12 O 19 nanoparticles synthesized by sonochemical process assisted with heat treatment. X-ray Diffraction analysis of the obtained powder showed the formation of Fe 3 O 4 with low crystallinity degree, which increased with the increase in SOP, together in a crystalline phase identified as SrCO 3 . The formation of SrFe 12 O 19 started at 1073 K, and was completed at 1173 K. However, hexaferrite was obtained with the secondary phases α-Fe 2 O 3 and SrFeO 2.5 . At 1323 K, the secondary phases vanished, and a single phase SrFe 12 O 19 was detected. Vibrating Sample Magnetometry analysis showed that the SrFeO 2.5 phase caused the formation of a hysteresis loop known as the Perminvar magnetic hysteresis loop. At 1323 K, the powder synthesized at 120 W showed a specific magnetization of 67.15 Am 2 /kg at 1.43 × 10 6 A/m, and coercivity of 4.69 × 10 4 A/m, with a spherical-like morphology and average particle size of 56.81 nm obtained by Scanning Electron Microscopy analysis. The increment of SOP promoted a high degree of crystallinity and decrease in crystal size. Additionally, it promoted the formation of secondary phases, induced agglomeration, and modified the morphology of the particles.

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Synthesis and multiferroic properties of M-type SrFe12O19 hexaferrite ceramics

Cited by 60 publications

References 24 publications

Dual ferroic properties of hexagonal ferrite ceramics BaFe12O19 and SrFe12O19

Dual ferroic properties of hexagonal ferrite ceramics BaFe12O19 and SrFe12O19

Мультиферроидные свойства и структурные особенности Al-замещенных гексаферритов бария M-типа

Effect of Sonication Output Power on the Crystal Structure and Magnetism of SrFe12O19 Nanoparticles

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