Search Results - "Alcazar, G. A. Pérez"

Coercive field and Grüneisen's law by Salazar, M., Pérez Alcazar, G.A.

“…The general expression of the blocking temperature for a superparamagnetic system depends on the volume of the particle, but in this expression the volume is…”
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Mössbauer and XRD characterization of the effect of heat treatment and the tribological test on the physical and mechanical properties of a Fe-Mn-Al-C alloy by Ramos, J., Piamba, J. F., Sanchez, H., Pérez Alcazar, G. A.

“…In this study, a Fe-29.0Mn-6.0Al–0.9C-1.8Mo-1.6Si-0.4Cu (Wt. %) alloy was prepared in an induction furnace. The as-cast sample was submitted to homogenization…”
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Thermal oxidation behaviors and structures of Fe-9Cr-1Mo alloy by Betancur, J. D., Alcazar, G. A. Pérez, Nomura, K., Wang, C. J., Tabares, J. A.

“…Isothermal oxidation behaviors of Fe-9Cr-1Mo alloy were investigated at 600, 700, 750 and 850 ∘ C for 72 h in air atmosphere. The oxidation rates were measured…”
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Enhancing Magnetic Properties of τ-Mn₅₃.₃Al₄₅C₁.₇ Through Sintering With Fe₅₈.₅Co₃₁.₅X₁₀ Alloys by Martinez-Sanchez, H., Alcazar, G. A. Perez, Salazar, D., Garitaonandia, J. S., Hernandez, J. S. Trujillo, Zamora, Ligia E.

“…In this study, powders of the <inline-formula> <tex-math notation="LaTeX">\tau </tex-math></inline-formula>-Mn53.3Al45C1.7 hard magnetic phase were mixed and…”
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Theoretical and experimental study of FeSi on magnetic and phase properties by Piamba, J. F., Ortega, C., Hernández-Bravo, R., Carmona, J. M. González, Tabares, J. A., Alcázar, G. A. Pérez, Alvarado-Orozco, J. M.

“…In the present work, the structural, magnetic, and theoretical analysis of the Fe–Si alloy prepared by melting and heat-treated was performed. The ordered FeSi…”
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Landau–Lifshitz–Gilbert equation with symmetric coefficients of the dissipative function by Salazar, M., Pérez Alcazar, G.A.

“…A method to introduce the damping terms in the equations of motion of magnetization in a material consists in defining a positive dissipative function that has…”
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Landau–Lifshitz–Gilbert equation with symmetric coefficients of the dissipative function II by Salazar, M., Pérez Alcazar, G.A.

“…In a previous study (Salazar and Perez Alcazar, 2015) we obtained the modified Landau–Lifshitz–Gilbert equation. The modification consisted in proposing a…”
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Improving the ferromagnetic exchange coupling in hard τ-Mn53.3Al45.0C1.7 and soft Mn50B50 magnetic alloys by Sánchez, H. Martínez, Alfonso, L. E. Zamora, Hernandez, J. S. Trujillo, Salazar, D., Alcázar, G. A. Pérez

“…To improve the magnetic properties of the hard-magnetic phase τ -Mn 53.3 Al 45.0 C 1.7 , it was mixed with different quantities of the soft magnetic phase Mn…”
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Evidence of magnetic dipolar interaction in micrometric powders of the Fe50Mn10Al40 system: Melted alloys by Pérez Alcázar, G.A., Zamora, L.E., Tabares, J.A., Piamba, J.F., González, J.M., Greneche, J.M., Martinez, A., Romero, J.J., Marco, J.F.

“…Powders of melted disordered Fe50Mn10Al40 alloy were separated at different mean particle sizes as well as magnetically and structurally characterized. All the…”
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Study of Fe–Ni alloys produced by mechanical alloying by Valderruten, J.F., Pèrez Alcazar, G.A., Greneche, J.M.

“…Fe 1− x Ni x samples with 0.225 ⩽ x ⩽ 0.400 were prepared by mechanical alloying. XRD studies showed that this group of samples presents the bcc and fcc phases…”
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Study of Fe-doped ZnO by Mechanical Alloying by Piamba, J. F., Paz, J. C., Zamora, Ligia E., Pérez Alcázar, G. A.

“…Zn 100− x OFe x samples were obtained by mechanical alloying (MA) with different milling times. The purpose of this work was to analyze the variation of…”
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Evidence of exchange coupling in τ-MnAlC/FeCo system by Martínez Sánchez, H., Zamora Alfonso, L.E., Trujillo Hernandez, J.S., Pérez Alcázar, G.A.

“…•The structural and magnetic properties of Mn53.3Al45C1.7 and Fe65Co35 were studied.•It can be concluded that the soft and hard particles are…”
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Magnetic τ-MnAlC thin film fabrication by high-vacuum thermal evaporation by Gamez, J.D., Martínez-Sánchez, H., Valenzuela, J.L., Marín, L., Rodríguez, L.A., Snoeck, E., Zamora, L.E., Pérez Alcázar, G.A., Tabares, J.A.

“…•Magnetic τ-MnAlC thin films were fabricated by high-vacuum thermal evaporation.•High-concentration τ-MnAlC films were obtained by using a homogeneous τ-MnAlC…”
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Magnetism in Granular Systems II by Salazar, M., Pérez Alcazar, G. A.

“…Considering that the dipolar magnetic interaction plays an important role in the study of the magnetic properties of nano- and microparticulated systems, in…”
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Comparative study of the mechanical and tribological properties of a Hadfield and a Fermanal steel by Astudillo A., P. C., Soriano G., A. F., Barona Osorio, G. M., Sánchez Sthepa, H., Ramos, J., Durán, J. F., Pérez Alcázar, G. A.

“…In this study, Fe-12.50Mn-1.10C-1.70Cr-0.40Mo-0.40Si-0.50(max)P-0.50(max)S (Hadfield alloy) and Fe-28.4Mn-0.86C-1.63Al-0.42Cu-1.80Mo-1.59Si-0.60W (Fermanal…”
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Structural and magnetic properties of Fe0.45Mn0.25Al0.30 alloys prepared by mechanical alloying by Medina, M. H., Alcázar, G. A. Pérez

“…Samples from the Fe0.45Mn0.25Al0.30 system were prepared by mechanical alloying during 4, 8, 12, 16, 22 and 24 h by using two different…”
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Comparison of methods to obtain ash from coal of the Southwest of Colombia by Medina, G., Tabares, J. A., Alcazar, G. A. Pérez, Barraza, J. M.

“…The method for concentration of mineral matter at low temperature (about 250 °C), called Low Temperature Ash (LTA) was applied to a sample of coal from the…”
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Magnetic and Structural Properties of Fe–Mn–Al Alloys Produced by Mechanical Alloying by Pérez Alcázar, G. A., González, C., Cruz, B.

“…The effects of concentration and preparation conditions on the magnetic and structural properties of samples of the Fe-Mn-Al system prepared by mechanical…”
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Effect of Si on the magnetic properties of the Fe70Al30 alloy by PEREZ ALCAZAR, G. A, ZAMORA, Ligia. E, BETANCUR-RIOS, J. D, TABARES, J. A, GRENECHE, J. M, GONZILEZ, J. M

“…(Fe70Al30)100-xSix (x=0, 5, 10 and 20) alloys were obtained by mechanical milling for durations of 12, 24 and 36h. They were studied by X-ray diffraction…”
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Evidence of dipolar magnetic field in mechanically alloyed Fe50Al50 samples by Bustos, H., Oyola, D., Rojas, Y., Perez Alcazar, G.A., Gonzalez, J.M., Margineda, D.

“…► The big size distribution of mechanically alloyed FE50Al50 powders was avoided by sieving to different meshes. ► Show that the mean hyperfine magnetic field…”
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