Listar División de Nanociencias y Materiales por autor "Sánchez Llamazares, José Luis"
Mostrando ítems 41-60 de 65
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Material magnetocalorico basado en NdPrFe17 con propiedades mejoradas
Sánchez Llamazares, José Luis; Sánchez Valdés, Cesar Fidel; Ibarra Gaytán, Pablo Jesús (2015-09)"La presente invención está relacionada con un material magnetocalórico basado en cintas recién solidificadas de NdPrFe17 obtenidas por temple rotatorio. Este material tiene propiedades mejoradas en comparación con otros ... -
Microstructure and composition design of magnetic Ni-Mn-Sn Co-sputter deposited films
Quintana Nedelcos, Aris; Sánchez Llamazares, José Luis; Tupak García_Fernández (2015)"In this work, we study the effect of the substrate temperature (ST) during sputter-deposition as well as co-sputtering deposition on the fabrication of nanostructured Ni-Mn-Sn thin films. Sputtered films show Mn losses ... -
Microstructure and magnetocaloric effect of melt-spun Ni52Mn26Ga22 ribbon
Li, Zongbin; Sánchez Llamazares, José Luis; Sánchez Valdés, Cesar Fidel; Zhang, Yudong; Esling, Claude; Zhao, Xiang; Zuo, Liang (2012-04)"Microstructural features and magnetocaloric properties of Ni52Mn26Ga22 melt-spun ribbons were studied. Results show that there are four types of differently oriented variants of seven-layered modulated (7M) martensite 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 ... -
On the kinetic arrest of martensitic transformation in Ni-Mn-In melt-spun ribbons
Lino Zapata, Francisco Manuel; Ríos Jara, David; Sánchez Llamazares, José Luis (2017)"Kinetic arrest (KA) of martensitic transformation (MT) has been observed in as-solidified Ni52.2Mn34.3In13.5 melt-spun ribbons; a characterization by dc magnetization measurements was carried out. These alloy ribbons ... -
On the synthesis, structural transformation and magnetocaloric behavior of Ni37.5Co12.5Mn35Ti15 melt-spun ribbons
López Cruz, Mauricio; Zamora Mendieta, Jonathan; Sánchez Valdés, Cesar Fidel; Sánchez Llamazares, José Luis (American Institute of Physics, 2021)"We fabricated Ni37.5Co12.5Mn35Ti15 melt-spun ribbons at linear wheel speeds (WS) of 20 and 8 ms(-1) (series A and B, respectively). The effect of a short time thermal annealing (30 min.) between 1023 K and 1173 K on the ... -
Optimizing the curie temperature of pseudo-binary RxR'2-xFe17 (R,R' = rare earth) for magnetic refrigeration
Álvarez Alonso, Pablo; Gorria, Pedro; Cuello, Gabriel J.; Puente Orench, Inés; Sánchez Llamazares, José Luis; Franco, Victorino; Reiffers, Marian; Blanco Rodríguez, Jesús Angel (IOP Publishing, 2014)"Several pseudo-binary RxR2-x'Fe-17 alloys (with R = Y, Ce, Pr, Gd and Dy) were synthesized with rhombohedral Th2Zn17-type crystal structure determined from x-ray and neutron powder diffraction. The choice of compositions ... -
Phase transformation and magnetocaloric effect of Co-doped Mn–Ni–In melt-spun ribbons
Yang, Yiqiao; Li, Zongbin; Sánchez Valdés, Cesar Fidel; Sánchez Llamazares, José Luis; Yang, Bo; Zhang, Yudong; Esling, Claude; Zhao, Xiang; Zuo, Liang (American Institute of Physics, 2020)"Ribbon-shaped magnetocaloric materials are favorable to achieve high heat-transfer efficiencies due to their large specific surface area. In this work, Mn50Ni41−xIn9Cox (0 ≤ x ≤ 4) ribbons were prepared using a melt-spinning ... -
Phase transition and magnetocaloric properties of Mn50Ni42−xCoxSn8 (0 ≤ x ≤ 10) melt-spun ribbons
Li, Zongbin; Jiang, Yiwen; Li, Zhenzhuang; Sánchez Valdés, Cesar Fidel; Sánchez Llamazares, José Luis; Yang, Bo; Zhang, Yudong; Esling, Claude; Zhao, Xiang; Zuo, Liang (International Union of Crystallography, 2018)"The characteristics of magnetostructural coupling play a crucial role in the magnetic field-driven behaviour of magnetofunctional alloys. The availability of magnetostructural coupling over a broad temperature range is ... -
Refrigerant capacity of austenite in as-quenched and annealed Ni51.1Mn31.2In17.7 melt spun ribbons
Sánchez Llamazares, José Luis; Flores Zúñiga, Horacio; Sánchez Valdés, Cesar Fidel; Ross, Caroline A.; Garcia, Carlos (2012-04)"The thermal dependence of the magnetic entropy change (Delta S-M(T)) and refrigerant capacity (RC) of austenite in as-quenched ribbons of chemical composition Ni51.1Mn31.2In17.7 produced by melt spinning at a high cooling ... -
Room temperature ferromagnetism and ferroelectricity in strained multiferroic BiFeO3 thin films on La0.7Sr0.3MnO3/SiO2/Si substrates
Ramírez Camacho, Mayra Cecilia; Sánchez Valdés, Cesar Fidel; Gervacio Arciniega, José Juan; Ostos, Carlos; Bueno Baques, D.; Curiel Álvarez, Mario; Sánchez Llamazares, José Luis; Raymond Herrera, Oscar (Elsevier B.V, 2017-04)"A novel ferromagnetic state coexisting with ferroelectric ordering at room temperature in strained BiFeO3 (BFO) thin films grown using a sputtering technique on La0.7Sr0.3MnO3/SiO2/Si(100) (LSMO/SOS) substrates is reported. ... -
Shape-anisotropic nickel-PDMS composites with uniaxial magnetic anisotropy obtained by emulsification under magnetic field
Cabal Velarde, Javier Gustavo; Guerrero Serrano, Azdrubal Lobo; Romero Tela, Eva; García Gallegos, Jesús Hazael; Sánchez Llamazares, José Luis; Encinas Oropesa, Armando (Springer, 2017)"Magnetic microcomposites were fabricated by emulsification of a mixture of polydimethylsiloxane (PDMS) and nickel microparticles. The composites were obtained in a temperature-controlled water-surfactant media with and ... -
Sinterización por chispa y plasma de las aleaciones Heusler magnetocalóricas Ni50Mn37Sn13, Ni55Fe11Mn7Ga27, Ni50Mn35In15 y Ni47Cu3Mn35In15
Navarro-García, José-Daniel (2022-06)"En este trabajo se obtienen sinterizados mediante la técnica de sinterización por chispa y plasma (SPS) de las aleaciones Heusler Ni50Mn37Sn13, Ni55Fe11Mn7Ga27, Ni50Mn35In15 y Ni47Cu3Mn35In15, y se caracterizan sus ... -
Síntesis por solidificación rápida y caracterización magneto-estructural y magnetocalórica de la aleación cuaternaria Ni37.5Co12.5Mn35Ti15
López Cruz, Mauricio (13/07/2020)"En el presente trabajo de tesis se estudian las propiedades estructurales, microestructurales, térmicas y magnéticas de cintas recién solidificadas (referidas como as-cast) y tratadas térmicamente desde 973 K a 1173 K ... -
Síntesis por solidificación rápida y consolidación mediante la técnica de sinterización por chispa y plasma del compuesto intermetálico magnetocalórico DyNi5
Pérez Batalla, Rubén Uziel (2022-07)"El efecto magnetocalórico es un fenómeno estudiado desde hace algo más de un siglo. Su principal aplicación es la refrigeración magnética. El consumo energético necesario para alcanzar o mantener una temperatura mediante ... -
Structural and magnetic characterization of the intermartensitic phase transition in NiMnSn Heusler alloy ribbons
Sánchez Llamazares, José Luis; Flores Zúñiga, Horacio; Ríos Jara, David; Sánchez Valdés, Cesar Fidel; García Fernández, T.; Ross, Caroline A.; Garcia, Carlos (2013-05)"Phase transitions and structural and magnetic properties of rapidly solidified Ni50Mn38Sn12 alloy ribbons have been studied. Ribbon samples crystallize as a single-phase, ten-layered modulated (10M) monoclinic martensite ... -
Superparamagnetic state in La0.7Sr0.3MnO3 thin films obtained by rf-sputtering
Ramírez Camacho, Mayra Cecilia; Sánchez Valdés, Cesar Fidel; Curiel Álvarez, Mario; Sánchez Llamazares, José Luis; Siqueiros, Jesús M.; Raymond Herrera, Oscar (Nature Publishing Group, 2020)"A novel superparamagnetic state has been observed in high quality La0.7Sr0.3MnO3 (LSMO) thin films directly grown by rf-sputtering on SiOx/Si(100) substrates. The films are nanostructured without grain boundaries, constituted ... -
Synthesis and magnetocaloric characterization of rapidly solidified ErMn2 melt-spun ribbons
Sánchez Llamazares, José Luis; Ibarra Gaytán, Pablo Jesús; Sánchez Valdés, Cesar Fidel; Álvarez Alonso, Pablo; Martínez Iniesta, Armando David (Elsevier, 2017)"We have fabricated melt-spun ribbons of nominal composition ErMn2 and studied their phase constitution and magnetocaloric (MC) properties by X-ray diffraction, scanning electron microscopy (SEM), magnetization and heat ... -
Texture-induced enhancement of the magnetocaloric response in melt-spun DyNi2 ribbons
Ibarra Gaytán, Pablo Jesús; Sánchez Valdés, Cesar Fidel; Sánchez Llamazares, José Luis; Álvarez Alonso, Pablo; Gorria, Pedro; Blanco Rodríguez, Jesús Angel (2013-10)"The magnetocaloric properties of melt-spun ribbons of the Laves phase DyNi2 have been investigated. The as-quenched ribbons crystallize in a single-phase MgCu2-type crystal structure (C15; space group Fd (3) over barm) ...