Xem 1-6 trên 6 kết quả Magnetic ferrite
  • The hard magnetic ferrite system of Sr1-xLaxFe12-yCoyO19 with x = 0.0-0.3 and y = 0.00.3 has been prepared by traditional ceramic technology and showed hexagonal crystalline structure of M-Type.The anisotropic sample Sr0.8 La0.2Fe11.7Co0.3O19 + 0.5% weight SiO2 sintered at 1280oC/2h has the best hard magnetic properties, namely Br = 4.66 kG; BHC = 3.46 kOe and (BH)max = 5.70 MG.Oe.

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  • Recent progress in information technology, wireless communication, biotechnology and microelectronics requires advanced technologies and new magnetic materials to meet demands of modern devices. This collection of eight chapters provides an up‐todate review of recent trends and developments in technology, characterization methods, theory and applications of modern magnetic materials with original, never published contributions from the renowned scientists in the field of magnetism.

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  • R.A.M. Must be defect free Most at risk during in flight fueling High maintenance $14.5 million (F-117) Affected by weather conditions Reason for B-2 Bomber stationed only in USA References www.f-22raptor.com/st_getstealthy.php People.howstuffworks.com/stealth-bomber.htm People.howstuffworks.com/news-intem67.htm

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Aqueous Solution Preparation, Structure, and Magnetic Properties of Nano-Granular ZnxFe32xO4 Ferrite Films

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  • A series of cobalt doped nickel ferrite with composition of Ni1-XCoXFe2O4 with x ranges from 0.0 to 0.8 (in steps of 0.2) was prepared by using co-precipitation method and subsequently sintered, annealed at 6000C for 3h. The influence of the Co content on the crystal lattice parameter, the stretching vibration and the magnetization of specimens were subsequently studied. XRD and FTIR were used to investigate structure and composition variations of the samples. All samples were found to have a cubic spinel structure. ...

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  • Among spinel ferrites, Cd and Zn ferrites are always normal ferrites with Cd and Zn ions locating only in tetrahedral sites. This study presents effect of Zn on the magnetic and magnetocaloric properties of the mixed spinel ferrites Ni1-xZnxFe2O4 (x = 0.60, 0.65, 0.70, 0.75). The presence of Zn affects lattice parameters, saturation magnetization Ms, Curie temperature, Tc, and magnetic entropy change ∆Sm. At highest Zn content, Tc reduces to the temperature lower than room temperature and magnetic structure of spins in the octahedral sublattice should be strongly canted. ...

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