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First-order-reversal-curve analysis of Pr-Fe-B-based exchange spring magnets
(SPRINGER, 2010)
Ribbons of nominal composition (Pr(9.5)Fe(84.5)B(6))(0.96)Cr(0.01)(TiC)(0.03) were produced by arc-melting and melt-spinning the alloys on a Cu wheel. X-ray diffraction (XRD) reveals two main phases, one based upon alpha-Fe ...
Selection of new glass-forming compositions in Al-La system using a combination of topological instability and thermodynamic criteria
(ELSEVIER SCIENCE SA, 2009)
A combination of an extension of the topological instability ""lambda criterion"" and a thermodynamic criterion were applied to the Al-La system, indicating the best range of compositions for glass formation. Alloy ...
Structural studies of NaPO3-WO3 glasses by solid state NMR and Raman spectroscopy
(Royal Soc Chemistry, 2006-01-01)
Vitreous samples were prepared in the (100 2 x) NaPO3-x WO3 (0 <= x <= 70) glass forming system using conventional melting-quenching methods. The structural evolution of the vitreous network was monitored as a function of ...
Structural studies of NaPO3-WO3 glasses by solid state NMR and Raman spectroscopy
(Royal Soc Chemistry, 2006-01-01)
Vitreous samples were prepared in the (100 2 x) NaPO3-x WO3 (0 <= x <= 70) glass forming system using conventional melting-quenching methods. The structural evolution of the vitreous network was monitored as a function of ...
Estudio de la magnetización de volumen y superficial de vidrios metálicos magnéticos blandos
(2017)
En la primera parte de esta tesis, se presenta el desarrollo e instrumentación de un magnetómetro magneto-óptico de superficie basado en el efecto Kerr (SMOKE). Además, se presenta la verificación de su funcionamiento y ...
Dynamical structure factor of the triangular antiferromagnet: Schwinger boson theory beyond mean field
(American Physical Society, 2018-11)
We compute the zero-temperature dynamical structure factor S(q,ω) of the triangular lattice Heisenberg model (TLHM) using a Schwinger boson approach that includes the Gaussian fluctuations (1/N corrections) of the saddle-point ...
Produção, caracterização estrutural e propriedades de armazenagem de hidrogênio de ligas Mg-Zr
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEMCâmpus São Carlos, 2017-03-31)
Magnesium is considered a promising candidate in applications of storage hydrogen in the solid state, due, among other factors, to its low relative cost and high gravimetric capacity (7,6 wt%.). For magnesium, the use of ...
Structural studies of AgPO3-MoO3 glasses using solid state NMR and vibrational spectroscopies
(Elsevier B.V., 2012-04-01)
Vitreous samples (1-x) AgPO3-x MoO3 (0 <= x <= 0.5) were prepared by conventional melt-quenching and characterized by Differential Scanning Calorimetry (DSC). The structural evolution of the vitreous network was monitored ...
Propiedades estructurales y magnéticas de la aleación Nd60Fe30Al10 obtenida por solidificación rápida
(2011)
El objetivo del presente trabajo es el de sintetizar, caracterizar y describir la microestructura y los mecanismos que controlan la coercitividad en un composite RE-TM policristalino basado en el sistema NdFeAl de fácil ...