Now showing items 269-288 of 565

    • Magnetic and electrical properties of nitrogen-doped multiwall carbon nanotubes fabricated by a modified chemical vapor deposition method 

      García Betancourt, María Luisa; Vega Cantú, Yadira Itzel; Vega Díaz, Sofía Magdalena; Morelos Gómez, Aarón; Terrones Maldonado, Mauricio; Muñoz Sandoval, Emilio (2015)
      "Chemical vapor deposition (CVD) is a preferential method to fabricate carbon nanotubes (CNTs). Several changes have been proposed to obtain improved CNTs. In this work we have fabricated nitrogen-doped multiwall carbon ...
    • Magnetic and martensitic transformations in Ni48Co2Mn35In15 melt-spun ribbons 

      Pandey, Sudip; Quetz, Abdiel; Ibarra Gaytán, Pablo Jesús; Sánchez Valdés, Cesar Fidel; Aryal, Anil; Dubenko, Igor; Sánchez Llamazares, José Luis; Stadler, Shane; Ali, Naushad (American Institute of Physics, 2018)
      "As-solidified Ni48Co2Mn35In15 ribbons were prepared through the melt-spinning method, and their structural, magnetic, magnetocaloric properties, and martensitic transformations were investigated. The inverse martensitic ...
    • 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 fields produced by non-concentric and non-coplanar currents in circular loops 

      Espejel Morales, Raúl Arturo; Murguía Romero, Gabriela; Calles Martínez, Alipio Gustavo; Morán López, José Luis (IOP Publishing, 2019)
      "A numerical calculation for the stationary magnetic field produced by arrangements of non-concentric and non-coplanar loop current circuits is presented. The calculation is done by superposing the solution of the magnetic ...
    • Magnetic matrices used in high gradient magnetic separation (HGMS): a review 

      Ge, Wei; Encinas Oropesa, Armando; Araujo Palomo, Elsie Evelyn; Song, Shaoxian (2017)
      "HGMS is effective in separating or filtering fine and weakly magnetic particles and widely applied in mineral processing, water treatment, cell and protein purification. The magnetic matrix is a crucial device used in ...
    • Magnetic properties and size distribution of magnetite nanoparticles covered by oleic acid 

      Fernandez Afonso, Yilian; Maury Toledo, Augusto; García Zaldívar, Osmany; Hernández Landaverde, Martín Adelaido; Ramírez Bon, Rafael; Yañez Limón, José Martín; Díaz Castañón, Sergio; González Alfaro, Yorexis; Calderón Piñar, Francisco de Paula (2017)
      "The particle size and particle size distribution are very important to biomedical applications because the uptake of nanoparticles is strongly dependent on particle size. Oleic acid coated magnetite nanoparticles were ...
    • Magnetic properties of Fe nanoclusters: ab initio calculations of FeN N = 9,15, 27, 51, and 59 

      López Laurrabaquio, Guadalupe; Pérez Alvarez, Mario; Montejano Carrizales, Juan Martín; Aguilera Granja, Juan Faustino; Morán López, José Luis (Sociedad Mexicana de Física, A. C., 2006)
      "The magnetic properties of iron clusters (FeN, N = 9, 15, 27, 51, and 59 atoms) at T = 0 K with bcc–like structure and bulk parameters are studied using ab initio methods. In these studies we consider the spin–orbit ...
    • Magnetic properties of fe1 / crn nanoinclusions in fe 

      Pedro Gilberto, Alvarado Leyva; Montejano Carrizales, Juan Martín; Morán López, José Luis (Sociedad Mexicana de Física, A. C., 2002)
      "The magnetic properties of Fe1/CrN inclusions in a Fe matrix are calculated as a function of the Cr number of atoms N at zero temperature, and for N ? 168. The electronic structure is determined by using a realistic ...
    • 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 ...
    • Magnetic, thermal and magnetocaloric properties of Ni50Mn35In14.5B0.5 ribbons 

      Pandey, Sudip; Quetz, Abdiel; Ibarra Gaytán, Pablo Jesús; Sánchez Valdés, Cesar Fidel; Aryal, Anil; Dubenko, Igor; Mazumdar, Dipanjan; Sánchez Llamazares, José Luis; Stadler, Shane; Ali, Naushad (VBRI Press, 2017)
      "The structural, thermal, magnetic, and magnetocaloric properties of Ni50Mn35In14.5B0.5 melt-spun ribbons have been investigated using room-temperature x-ray diffraction (XRD), differential scanning calorimetry (DSC), and ...
    • Magnetism of carbon nanostructures and in situ TEM dynamic transformations of carbon-based nanomaterials. 

      Rodríguez Manzo, Julio Alejandro (2007)
      "Durante las últimas dos décadas se ha logrado sintetizar materiales de carbono con distintas formas estructurales y dimensiones en el orden de nanómetros, siendo los fullerenos y los nanotubos de carbono (NTC) dos ejemplos ...
    • Magnetite nanoparticles as adsorbent material for Cu2+ ions from aqueous solution 

      Cruz Jorge, Erlen Yizenia; Martínez Sánchez, Ricardo; Jiménez Chacón, Juan; Díaz Castañón, Sergio; Calderón Piñar, Francisco de Paula (2018)
      "Cu2+ ions can cause serious injuries to human health, at both high and low concentrations. Therefore, it is important not only to remove Cu2+ ions from aqueous media, but also to develop analytical methods for their ...
    • 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 effect in the low hysteresis Ni-Mn-In metamagnetic shape-memory Heusler alloy 

      Castillo Villa, Pedro Osmany; Mañosa, Lluis; Frontera, Carlos; Majumdar, Subham; Planes, Antoni (2014-05)
      "We have studied magnetocaloric properties of a Ni-Mn-In metamagnetic shape-memory alloy especially designed in order to display low thermal hysteresis. Magnetization and calorimetric measurements under a magnetic field ...
    • 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 ...