Listar División de Nanociencias y Materiales por autor "Sánchez Valdés, Cesar Fidel"

Mostrando ítems 21-36 de 36

    • 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 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 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 ...

    • 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. ...

    • 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) ...

    • The effect of cooling rate on magnetothermal properties of Fe49Rh51 

      Sánchez Valdés, Cesar Fidel; Gimaev, Radel R.; López Cruz, Mauricio; Sánchez Llamazares, José Luis; Zverev, Vladimir; Tishin, Alexander M.; Carvalho, Alexandre Magnus Gomes; De Aguiar, Denilson Jose Marcolino; Mudryk, Yaroslav; Pecharsky, Vitalij K. (Elsevier, 2020)
      "We have investigated the effects of quenching rate on the thermal dependence of the magnetic entropy change ?SM(T) and the magnetic field induced hysteresis loss through the antiferromagnetic (AFM)???ferromagnetic (FM) ...

    • Transformation behavior and magnetocaloric effect in Mn1−xCrxCoGe (x = 0.04 and 0.11) melt-spun ribbons tailored by heat treatment 

      Daniel Pérez, Gerardo; Sánchez Llamazares, José Luis; Alvarez Alonso, Pablo; Sánchez Valdés, Cesar Fidel; Varga, Rastislav; Chernenko, Volodymyr; Quintana Nedelcos, Aris (Elsevier, 2017-12)
      "Recently, MnNiGe and MnCoGe intermetallic compounds have received a considerable attention due to the coupled tunable martensitic and magnetic transitions as well as giant magnetocaloric effect (MCE) they exhibit. In this ...

    • Transformation process dependent magnetocaloric properties of annealed Ni50Mn18Cu7Ga25 ribbons 

      Zou, Naifu; Li, Zongbin; Zhang, Yudong; Sánchez Valdés, Cesar Fidel; Sánchez Llamazares, José Luis; Esling, Claude; Yang, Bo; Zhao, Xingke; Zuo, Liang (Elsevier, 2017)
      "The properties related to magnetocaloric effect (MCE) of annealed Ni50Mn18Cu7Ga25 ribbons were studied in connection with their microstructural features and magnetostructural transformations. The differences in magnetic ...