Results 71 to 80 of about 2,761 (198)

Structural properties of the composites (BaFe12O19/Ni0.3Cu0.2Zn0.5Al-0.5Fe1.5O4) prepared by sol-gel auto combustion

open access: yesTikrit Journal of Pure Science, 2019
The nanocomposites ferrites (BaFe12O19/Ni0.3Cu0.2Zn0.5Al­0.5Fe1.5O4) with (x=10,25,50,75,90%) were prepared by sol-gel auto combustion. The micro-structural features of the samples were studied using X-ray diffraction (XRD) and scanning electron ...
admin admin   +4 more
doaj   +1 more source

Pengembangan Bahan Magnetik Barium Heksaferite dari Mineral Yarosit Alam dan Karakterisasinya [PDF]

open access: yes, 2012
Bahan magnet permanen Barium Heksaferrite (BaFe12O19) telah berhasil dibuat dengan metode reaksi padatan dengan bahan dasar Fe2O3 yang diperoleh dari pemurnian bahan alam mineral yarosit.
Gustaman, D. (D)   +3 more
core   +1 more source

Sintering temperature dependence of optimized microstructure formation of BaFe12O19 using sol–gel method [PDF]

open access: yes, 2015
In an attempt to obtain the best possible properties of barium hexaferrite (BaFe12O19), the sol–gel synthesis method was chosen and, the optimum sintering conditions were established.
Hashim, Mansor   +6 more
core   +1 more source

Exploring the Effect of Ball Milling on the Physicochemical Properties and Oxygen Evolution Reaction Activity of Nickel and Cobalt Oxides

open access: yesAdvanced Energy and Sustainability Research, Volume 5, Issue 12, December 2024.
Ball milling of powder catalysts is not just a tool for reducing particle size, it can also cause critical chemical changes that impact their catalytic performance. Water, as an additive agent, additionally influences such changes. Understanding these processes and their impact on electrochemical performance is crucial for the correct evaluation of ...
Sabita Bhandari   +4 more
wiley   +1 more source

Synthesis Of Nanoparticle Barium Hex Aferrite By Sol Gel Auto Combutio

open access: yesJurnal Teknik Industri, 2012
Nanocrystalline of Barium Hexaferrite (BaFe12O19) powders have been synthesized using the sol gel auto combustion method. The ferrite precursors were obtained from aqueous mixtures of Barium nitrate and Ferric nitrate by auto combustion reaction from gel
W Widyastuti   +3 more
doaj   +1 more source

Topological quantum materials for spintronics

open access: yesMetalMat, Volume 1, Issue 2, December 2024.
Spintronics, exploiting electron spin over charge, aims to transform electronics. Exploring novel materials for ultra‐efficient, high‐density spintronic devices drives research. Topological quantum materials generate keen interest due to unique properties, holding potential for breakthroughs.
Jinyu Duan   +4 more
wiley   +1 more source

Influence of grinding, pressing and sintering of the powder 50.0 wt% Fe, 47.0 wt% BaTiO3 and 3.0 wt% TiO2 on morphology, microstructure, magnetic and electric properties [PDF]

open access: yesScience of Sintering
A mixture of 50.0 wt% Fe, 47.0 wt% BaTiO3, and 3.0 wt% TiO2 powders is milled and then pressed and sintered. Samples sintered from ground powders have a structure consisting of plates.
Luković Milentije   +6 more
doaj   +1 more source

Субсолидусное строение системы CoO – BaO – Fe₂O₃. Ч. 2. Фазовые равновесия в системе CoO – BaO – Fe₂O₃ без учета тройных соединений [PDF]

open access: yes, 2015
Приводятся результаты расчета изменения свободной энергии Гиббса от температуры для модельных реакций, моделирующих все возможные варианты двухфазных равновесий в системе CoO—BaO—Fe₂O₃.
Костыркин, Олег Владимирович   +3 more
core  

Phase Separation of ϵ‐Fe2O3 and BaFe12O19 in a Synthesis Combining Reverse‐Micelle and Sol‐Gel Techniques

open access: yesEuropean Journal of Inorganic Chemistry, Volume 27, Issue 22, August 1, 2024.
We examine the effect of Ba ratio on a synthesis combining reverse‐micelle and sol‐gel techniques, showing ϵ‐Fe2O3 nanorods form at low Ba ratio and BaFe12O19 forms at higher ratios with distinct phase separation at 1000 °C. Initially, the proximity of Ba2Fe2O5 and γ‐Fe2O3 nanoparticles formed within SiO2 influences the final phase.
Jessica MacDougall   +4 more
wiley   +1 more source

Propriedades elétricas da hexaferrita do tipo M BaFe12O19 investigadas por espectroscopia de impedância à baixa temperatura [PDF]

open access: yesCerâmica
Resumo No presente trabalho foram investigadas as propriedades elétricas da hexaferrita do tipo M BaFe12O19 (BaM) no regime de baixas temperaturas, algo novo na literatura deste material.
Flávio Moura e Silva Júnior   +3 more
doaj   +1 more source

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