Listar Publicaciones Científicas Nanociencias y Materiales por autor "Álvarez Alonso, Pablo"
Mostrando ítems 1-20 de 27
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Adiabatic magnetocaloric effect in Ni50Mn35In15 ribbons
Álvarez Alonso, Pablo; Aguilar Ortiz, Christian Omar; Camarillo García, Juan Pablo Ramón; Salazar Jaramillo, Daniel; Flores Zúñiga, Horacio; Chernenko, Volodymyr (2016-11)"Heusler-type Ni-Mn-based metamagnetic shape memory alloys (MetaMSMAs) are promising candidates for magnetic refrigeration. To increase heat exchange rate and efficiency of cooling, the material should have a high ... -
Conventional and inverse elastocaloric effect in Ni-Fe-Ga and Ni-Mn-Sn ribbons
Álvarez Alonso, Pablo; Aguilar Ortiz, Christian Omar; Flores Zúñiga, Horacio; Chernenko, Volodymyr (Elsevier, 2017-02)"Magnetic shape memory Ni55Fe16Ga29 and Ni50Mn40Sn10 melt spun ribbons have been characterized by thermomechanical and mechanical analysis. Martensitic transformation temperatures show an abnormal tendency to decline under ... -
Effect of solidification rate on martensitic transformation behavior and adiabatic magnetocaloric effect of Ni50Mn35In15 ribbons
Aguilar Ortiz, Christian Omar; Camarillo García, Juan Pablo Ramón; Vergara, José; Álvarez Alonso, Pablo; Salazar Jaramillo, Daniel; Chernenko, Volodymyr; Flores Zúñiga, Horacio (Elsevier, 2018)"Ni50Mn35In15 compound has become an archetype for investigating the functional properties of metamagnetic shape memory alloys. We have fabricated Ni50Mn35In15 melt spun ribbons to study the crystal structure, microstructure, ... -
Enhanced refrigerant capacity and magnetic entropy flattening using a two-amorphous FeZrB(Cu) composite
Álvarez Alonso, Pablo; Sánchez Llamazares, José Luis; Gorria, Pedro; Blanco Rodríguez, Jesús Angel (2011-12)"The temperature dependence of the isothermal magnetic entropy change, Delta S-M, and the magnetic field dependence of the refrigerant capacity, RC, have been investigated in a composite system xA + (1 - x) B, based on ... -
Enhanced refrigerant capacity in two-phase nanocrystalline/amorphous NdPrFe17 melt-spun ribbons
Sánchez Valdés, Cesar Fidel; Ibarra Gaytán, Pablo Jesús; Sánchez Llamazares, José Luis; Ávalos Borja, Miguel; Álvarez Alonso, Pablo; Gorria, Pedro; Blanco Rodríguez, Jesús Angel (2014-05)"he magnetocaloric properties of NdPrFe17 melt-spun ribbons composed of nanocrystallites surrounded by an intergranular amorphous phase have been studied. The nanocomposite shows two successive second-order magnetic phase ... -
High-magnetic field characterization of magnetocaloric effect in FeZrB(Cu) amorphous ribbons
Álvarez Alonso, Pablo; Sánchez Llamazares, José Luis; Sánchez Valdés, Cesar Fidel; Fernández-Gubieda Ruiz, María Luisa; Gorria, Pedro; Blanco Rodríguez, Jesús Angel (2015-05)"The magnetic and magnetocaloric properties of a series of Fe-rich FeZrB(Cu) amorphous ribbons were investigated under magnetic field values up to mu H-0 of 8 T. A correlation between the saturation magnetization and the ... -
Influence of Fe doping and magnetic field on martensitic transition in Ni–Mn–Sn melt-spun ribbons
Aguilar Ortiz, Christian Omar; Soto-Parra, Daniel Enrique; Álvarez Alonso, Pablo; Lázpita, Patricia; Salazar, Daniel; Castillo Villa, Pedro Osmany; Flores Zúñiga, Horacio; Chernenko, Volodymyr (Elsevier, 2016-04)"Mn-rich Ni-Mn-Sn metamagnetic shape memory alloys exhibiting magnetostructural transformation are of a great potential as the base materials for solid-state refrigeration. With the aim of fine tuning of the transformation ... -
Investigating the magnetic entropy change in single-phase Y2Fe17 melt-spun ribbons
Sánchez Llamazares, José Luis; Álvarez Alonso, Pablo; Sánchez Valdés, Cesar Fidel; Ibarra Gaytán, Pablo Jesús; Blanco Rodríguez, Jesús Angel; Gorria, Pedro (Elsevier, 2016)"The inspection of simplified fabrication and/or processing routes in order to produce materials with attractive magnetocaloric properties is of paramount importance for the development of environmentally friendly magnetic ... -
Magnetic entropy change and refrigerant capacity of rapidly solidified TbNi2 alloy ribbons
Sánchez Llamazares, José Luis; Sánchez Valdés, Cesar Fidel; Ibarra Gaytán, Pablo Jesús; Álvarez Alonso, Pablo; Gorria, Pedro; Blanco Rodríguez, Jesús Angel (2013-05)"The magnetocaloric effect in TbNi2 alloy ribbons synthesized by rapid solidification was investigated. This material crystallizes in a superstructure of the cubic Laves phase structure type C15 (space group F-43m). The ... -
Magnetic entropy table-like shape in RNi2 composites for cryogenic refrigeration
Ibarra Gaytán, Pablo Jesús; Sánchez Llamazares, José Luis; Álvarez Alonso, Pablo; Sánchez Valdés, Cesar Fidel; Gorria, Pedro; Blanco Rodríguez, Jesús Angel (2015-05)"We have investigated the magnetocaloric (MC) effect in a two-phase composite based on melt-spun ribbons of the intermetallic DyNi2 and TbNi2 Laves phases. The temperature dependence of the isothermal magnetic entropy ... -
Magnetic structure and magneto-volume anomalies in Er(2)Fe(17) compound
Álvarez Alonso, Pablo; Gorria, Pedro; Marcos, Jorge Sánchez; Puente Orench, Inés; Rodríguez Velamazán, José Alberto; Cuello, Gabriel J.; Sánchez Llamazares, José Luis; Blanco Rodríguez, Jesús Angel (2011)"Neutron powder diffraction shows that the intermetallic Er(2)Fe(17) compound with hexagonal crystal structure has a ferrimagnetic ground state (T(C) = 303 K). At T = 5 K the magnetic moments of Fe sublattice (mu similar ... -
Magneto-caloric effect in the pseudo-binary intermetallic YPrFe17 compound
Álvarez Alonso, Pablo; Gorria, Pedro; Sánchez Llamazares, José Luis; Perez, Maria J.; Franco, Victorino; Reiffers, Marian; Kovac, Jozef; Puente Orench, Inés; Blanco Rodríguez, Jesús Angel (Elsevier, 2011)"We have synthesized the intermetallic YPrFe17 compound by arc-melting. X-ray and neutron powder diffraction show that the crystal structure is rhombohedral with space group (Th2Zn17-type). The investigated compound ... -
Magnetocaloric effect in ErNi2 melt-spun ribbons
Sánchez Llamazares, José Luis; Ibarra Gaytán, Pablo Jesús; Sánchez Valdés, Cesar Fidel; Ríos Jara, David; Álvarez Alonso, Pablo (Elsevier, 2019)"ErNi2 ribbons were produced by rapid solidification using the melt spinning technique. Their structural, magnetic and magnetocaloric properties in the as-solidified state were studied by X-ray diffraction, scanning electron ... -
Magnetocaloric effect in ErNi2 melt-spun ribbons
Sánchez Llamazares, José Luis; Ibarra Gaytán, Pablo Jesús; Sánchez Valdés, Cesar Fidel; Ríos Jara, David; Álvarez Alonso, Pablo (Elsevier, 2020)"ErNi2 ribbons were produced by rapid solidification using the melt spinning technique. Their structural, magnetic and magnetocaloric properties in the as-solidified state were studied by X-ray diffraction, scanning electron ... -
Magnetocaloric effect in nanostructured Pr2Fe17 and Nd2Fe17 synthesized by high-energy ball-milling
Álvarez Alonso, Pablo; Sánchez Marcos, Jorge; Sánchez Llamazares, José Luis; Franco, Victorino; Reiffers, Marian; Blanco Rodríguez, Jesús Angel; Gorria, Pedro (2010-11)"Nanocrystalline Pr2Fe17 and Nd2Fe17 powders with rhombohedral Th2Zn17-type crystal structure and average particle sizes around 20 nm have been obtained by high-energy ball milling While the bulk alloys show a well-defined ... -
Magnetocaloric properties of rapidly solidified Dy3Co alloy ribbons
Sánchez Llamazares, José Luis; Flores Zúñiga, Horacio; Álvarez Alonso, Pablo; Sánchez Valdés, Cesar Fidel; Lara Rodríguez, Gabriel Ángel; Fernández-Gubieda Ruiz, María Luisa (2015-05)"The magnetic and magnetocaloric (MC) properties of melt-spun ribbons of the Dy3Co intermetallic compound were investigated. Samples were fabricated in an Ar environment using a homemade melt spinner system at a linear ... -
Magnetostructural transition and magnetocaloric effect in MnNiGe1.05 melt-spun ribbons
Daniel Pérez, Gerardo; Sánchez Llamazares, José Luis; Quintana Nedelcos, Aris; Álvarez Alonso, Pablo; Chernenko, Volodymyr (2014-05)"Alloy ribbons of nominal composition MnNiGe1.05 were produced using the melt-spinning technique. As-quenched (aq) polycrystalline ribbons are single-phase showing the hexagonal Ni2In-type crystal structure. After thermal ... -
Magnetovolume and magnetocaloric effects in Er2Fe17
Álvarez Alonso, Pablo; Gorria, Pedro; Blanco Rodríguez, Jesús Angel; Sánchez Marcos, Jorge; Cuello, Gabriel J.; Puente Orench, Inés; Rodríguez Velamazán, José Alberto; Garbarino, Gastón; De Pedro, Imanol; Rodríguez Fernández, Jesús; Sánchez Llamazares, José Luis (2012-11)"Combining different experimental techniques, investigations in hexagonal P6(3)/mmc Er2Fe17 showremarkable magnetovolume anomalies below the Curie temperature, T-C. The spontaneous magnetostriction reaches 1.6 x 10(-2) at ... -
On the broadening of the magnetic entropy change due to Curie temperature distribution
Álvarez Alonso, Pablo; Sánchez Llamazares, José Luis; Sánchez Valdés, Cesar Fidel; Cuello, Gabriel J.; Franco, Victorino; Gorria, Pedro; Blanco Rodríguez, Jesús Angel (2014-05)"We have studied the correlation between the broadening of the isothermal magnetic entropy change and the Curie temperature (T-C) distribution in nanostructured Pr2Fe17 and Nd2Fe17 alloys produced by high-energy ball-milling ... -
On the correct estimation of the magnetic entropy change across the magneto-structural transition from the Maxwell relation: study of MnCoGeBx alloy ribbons
Quintana Nedelcos, Aris; Sánchez Llamazares, José Luis; Sánchez Valdés, Cesar Fidel; Álvarez Alonso, Pablo; Gorria, Pedro; Shamba, Precious; Morley, Nicola (Elsevier, 2017)"An accurate calculation of the different magnetocaloric-related magnitudes derived from the temperature dependence of the magnetic entropy change in materials exhibiting first-order magnetocaloric effect is imperative to ...