Feb 15, 2011 · Volume 232 Symposium T – Magnetic Materials: Microstructure and Properties 1991, 275 Relations of Corrosion Resistance, Coercivity, and Magnetizability of Modified Nd-Fe-B Sintered Magnets to Their Microstructure. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. Jan 01, 2000 · Technical magnetic properties 11, 12 can be defined making use of a typical magnetic hysteresis curve as illustrated in Fig. 1.Magnetic hysteresis  is a useful attribute of a permanent magnet material in which we wish to store a large metastable magnetization.Attributes of a good permenent magnet include: a large saturation and remnant inductions, B s and B r: a large saturation.
978-1-107-41190-6 - Materials Research Society Symposium Proceedings: Volume 721: Magnetic and Electronic Films Microstructure, Texture and Application to Data Storage Editors: Patrick W. DeHaven, David P. Field, Samuel D. Harkness IV, John A. Sutliff, Jerzy A. Szpunar, Li Tang, Thomas Thomson and Mark D. Vaudin Frontmatter More information. Hysteresis loops of Sm 2 Fe 17 N x alloys after HPT are shown on Fig. 3, and magnetic properties are shown in Table 1.According to these results, the coercivity increases with an increase in the degree of deformation and reaches a maximum of H c = 624.4 kA/m 7.768 kOe at n = 3. A further increase in the degree of deformation at n = 5 leads to a decrease in the coercivity down to H c = 451.1.
The Brazilian Materials Research Society B-MRS and the Organizing Committee of the XVIII Brazilian MRS meeting invite the worldwide community of materials research to attend the 2019 Meeting, which will be held at the Balneário Camboriú-SC, in the period September 22nd-26th, 2019. This traditional forum will be dedicated to recent advances and perspectives in materials science and. To obtain hard magnetic properties, the microstructure of Nd-Fe-B magnet must a have hard magnetic phase of Nd 2 Fe 14 B surrounded by a soft magnetic phase of Nd. Therefore, tuning of laser parameters such as speed, focus, power as well as material layer thickness is vital to obtain a dense net shape hard magnet. The magnetic moment per formula unit in Bohr-magneton was calculated using the following relation; P. Phansamdaeng and J. Khemprasit / Materials Today: Proceedings 17 2019 1644â€“1651 1649 5585 s B MMW n Ã— = 4 where nB is the magnetic moment, MW is molecular weight, Ms is saturation magnetization and 5585 is magnetic factor .
May 24, 2013 · In this study, a new soft magnetic composite SMC material design scheme was put forward. According to this design scheme, SMC with silicate glass insulation layers was prepared by powder metallurgy with nanometer glass powder and micron iron powder. It can be annealed at high temperature for reducing residual stress. The magnetic properties were good. The maximum. May 03, 1991 · Magnetic materials--microstructure and properties: symposium held April 30-May 3, 1991, Anaheim, California, U.S.A. Abstract. This symposium comprised 11 invited talks and 42 contributed papers, ran over 3 1/2 days, and provided a unique and interactive forum in which recent advances in low dimensional magnetism, diluted magnetic semiconductors, epitaxial overlayers and the utilization of in-situ and ex-situ techniques to characterize their microstructure, electronic and magnetic properties were discussed. Investigation of the correlation between the microstructure and magnetic properties of Co 68 Cr 20 Pt 12 /Cr thin films which were sputter deposited under different conditions onto 95 mm ultrasmooth NiP/AlMg disk substrates R a ∼2 Å has been carried out. Grain morphology characteristics of the films and disk surface roughness were studied by transmission electron microscopy TEM and by. Livingston, in Proceedings of the ASM Symposium on Soft and Hard Magnetic Materials, edited by J. A. Salsgiver et al., Florida 1986, p. 71. Google Scholar; 12. K. D. Durst and H. Kronmuller, in Proceedings of the Eighth International Workshop on Rare Earth Permanent Magnets, edited by K. J. Strnat University of Dayton Press, Dayton, OH, 1985.
The magnetic and magnetotransport properties of several series of sandwiches consisting of two ferromagnetic layers Ni, Co, Ni80Fe20 separated by a noble metal Cu, Ag, Au are described. In order to vary the relative orientation of the magnetizations of the two ferromagnets, one of them was constrained by exchange anisotropy e.g., NiFe/Fe50Mn50. We have investigated the microstructures of melt-spun SmCo0.58Fe0.31Cu0.04Zr0.05B0.02z z=7.5 and 12 ribbons by transmission electron microscopy TEM and three dimensional atom probe 3DAP to correlate them with the hard magnetic properties. The ribbon with z=7.5 has a high coercivity iHc∼12 kOe while the ribbon with z=12 possesses a low coercivity iHc∼4.9 kOe.
This paper deals with the systematic investigation of microstructure, optical and magnetic properties of Co doped CaSnO 3 nanostructures prepared by hydrothermal route. Detailed structural analysis using XRD, FTIR and Raman analysis reveals the formation of orthorhombic CaSnO 3 with pnma space group. Optical absorption studies authenticates the tuning of optical band gap upto 1eV was achieved. Magnetic circular dichroism in resonant photoemission combined with a space resolving photoelectron spectrometer has been applied to measure magnetic domain structures with a spatial resolution of. Jun 16, 2006 · Bentz DP, Martys NS, Stutzman PE, Levenson MS, Garboczi EJ, Dunsmuir J, Schwartz LM 1995 X-ray microtomography of an ASTM C109 mortar exposed to sulfate attack, Microstructure of cement-based systems/bonding and interfaces in cementitious materials. MRS Symposium Proceedings, 370:77–82.
Sonya Ivanova, Ekaterina Zhecheva, Radostina Stoyanova, Microstructure of LaCoO3 prepared by freeze-drying of metal–citrate precursors revealed by EPR, Journal of Physics and Chemistry of Solids, 10.1016/j.jpcs.2006.10.005, 68, 2, 168-174, 2007. May 31, 2020 · Free Online Library: Microstructure and Properties of Sulfoaluminate Cement-Based Grouting Materials: Effect of Calcium Sulfate Variety.Research Article by "Advances in Materials Science and Engineering"; Engineering and manufacturing Calcium oxides Calcium sulfate Calorimetry Analysis Mechanical properties Cements Building materials Gypsum Lime Lime industry. The microstructure is characterized by two separate parameters representing geometry and scale. The dimensionless geometry parameter, denoted T, comprises five scaling factors that relate specific microstructural featuers e.g., surface curvature to the scale grain diameter. Journal of Magnetism and Magnetic Materials, 10.1016/j.jmmm.
Apr 20, 2009 · Nanostructured materials with designable microstructure and controllable physical and chemical properties are highly desired for practical applications in nanotechnology. In this article, it is reported that nanoporous copper with a tunable nanopore size can be fabricated by controlling the dealloying process. 232-237: Number of pages: 6: Journal: Proceedings of SPIE - The International Society for Optical Engineering: Volume: 1394: State: Published - Jan 1 1991: Event: Progress in High-Temperature Superconducting Transistors and Other Devices - Santa Clara, CA, USA Duration: Oct 4.
Conventional physical metallurgy approaches to improve soft ferromagnetic properties involve tailoring chemistry and optimizing microstructure. Alloy design involves consideration of induction and Curie temperatures. Significant in the tailoring of microstructure is the recognition that the coercivity, H c is roughly inversely proportional to the grain size D g for grain sizes exceeding.
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