Browsing División de Nanociencias y Materiales by Title

Now showing items 494-513 of 529

    • Transformation behavior and inverse caloric effects in magnetic shape memory Ni44-xCuxCo6Mn39Sn11 ribbons 

      Wójcik, Anna; Maziarz, Wojciech; Szczerba, Maciej; Sikora, Marcin; Zywczak, Antoni; Aguilar Ortiz, Christian Omar; Álvarez Alonso, Pablo; Villa, Elena; Flores Zúñiga, Horacio; Cesari, Eduard; Dutkiewicz, Jan; Chernenko, Volodymyr (2017-10)
      "An influence of the Cu doping on structural, magnetic and thermoelastic properties of the Heusler Ni44-xCuxCo6Mn39Sn11 (x = 1–4 at%) ribbons has been investigated. It is found that the addition of Cu stabilizes austenite ...

    • 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 ...

    • Transformation temperatures and electrochemical behavior of polycrystalline Fe-Doped Ni-Mn-Ga and Co-Ni-Ga Alloys 

      Sánchez Carrillo, Mario; Flores de los Ríos, Juan Pablo; Nava Dino, Claudia Georgina; Flores Zúñiga, Horacio; Narro García, Roberto; Maldonado Orozco, María Cristina; Estupiñán López, Francisco Humberto; Chacón Nava, José Guadalupe (ESG, 2018)
      "The effect of Fe addition on martensitic transformation temperatures and electrochemical behavior was studied in polycrystalline Ni51.4Mn24.8-XGa23.8FeX alloys (1<x<2.2) and Co38.3Ni32.1Ga29.6 as alternative to Ni-Mn-Ga ...

    • Transitional behaviour in the transformation from active end planes to stable loops caused by annealing 

      Endo, Morinobu; Lee, Byoung-Ju; Kim, Yoong Ahm; Kim, Yong-jung; Muramatsu, Hiroyukim; Yanagisawa, Takahashi; Hayashi, Takuya; Terrones Maldonado, Mauricio; Dresselhaus, Mildred (IOP Publishing, 2003)
      "Here we investigate the stabilization process on the active outer/inner surfaces (or the end plane of a graphene sheet) for shortened cup-stacked-type carbon nanotubes caused by annealing, utilizing both analytic and ...

    • Transport and diffusion on crystalline surfaces under external forces 

      Lindenberg, Katja; Lacasta, Ana Maria; Sancho, Jose Maria; Romero Castro, Aldo Humberto (IOP Publishing, 2005)
      "We present a numerical study of classical particles obeying a Langevin equation and moving on a solid crystalline surface under an external force that may either be constant or modulated by periodic oscillations. We focus ...

    • Transporte electrónico en punto cuánticos 

      Nava Rodríguez, Roberto Israel (2021-10-28)
      "En el transporte electrónico en puntos cuánticos pueden aparecer algunos efectos particulares dependiendo de las características especificas del sistema como la geometría o la presencia de campos magnéticos. En este trabajo ...

    • Transporte electrónico en ratchets cuánticos 

      Palomares Báez, Juan Pedro (2006)
      "Actualmente, el problema de la miniaturización progresiva de los dispositivos electrónicos ha conducido a la elaboración de sofisticadas técnicas litográficas y de crecimiento cristalino. Gracias a estas técnica es que ...

    • Trasformación martensítica y efecto magnetocalórico en aleaciones Ni50Mn37Sn13 y MnCoGeBx obtenida por enfriamiento rapido. 

      Quintana Nedelcos, Aris (2014)
      "La presente tesis está orientada al estudio de la transformación martensítica (TM) y el efecto magnetocalórico de aleaciones Ni50Mn37Sn13 y Mn0.96Co1.04GeB0.02. Como aspecto complementario se incluye un capítulo en el que ...

    • Traveling kinks in cubic nonlinear Ginzburg-Landau equations 

      Rosu Barbus, Haret-Codratian; Cornejo Pérez, Octavio; Ojeda May, Pedro Armando (2012)
      "Nonlinear cubic Euler-Lagrange equations of motion in the traveling variable are usually derived from Ginzburg-Landau free energy functionals frequently encountered in several fields of physics. Many authors considered ...

    • Traveling wave solutions for wave equations with two exponential nonlinearities 

      Mancas, Stefan C; Rosu Barbus, Haret-Codratian; Pérez Maldonado, Maximino (Walter de Gruyter GmbH, 2018)
      "We use a simple method that leads to the integrals involved in obtaining the travelling-wave solutions of wave equations with one and two exponential nonlinearities. When the constant term in the integrand is zero, implicit ...

    • Travelling-wave solutions for Korteweg-de Vries-Burgers equations through factorizations 

      Cornejo Pérez, Octavio; Negro, Javier; Nieto, Luis M.; Rosu Barbus, Haret-Codratian (2006)
      "Travelling-wave solutions of the standard and compound form of Korteweg-de Vries-Burgers equations are found using factorizations of the correspond-ing reduced ordinary diferential equations. The procedure leads to solutions ...

    • Trayectorias relativistas, ecuaciones de Frenet-Serret y aplicaciones a nanomateriales 

      Pérez Román, Iván de Jesús (2023-03)
      "En esta tesis, estudiamos el Jerk relativista y otras derivadas superiores cinemáticas en espacio-tiempo de Minkowski mediante el marco de Frenet-Serret generalizado. La importancia del marco de Frenet-Serret radica, en ...

    • Treatment of tequila vinasse and elimination of phenol by coagulation–flocculation process coupled with heterogeneous photocatalysis using titanium dioxide nanoparticles 

      Rodríguez Arreola, Alicia; Sánchez Tizapa, Marciano; Zurita, Florentina; Morán Lázaro, Juan Pablo; Castañeda Valderrama, Rocío; Rodríguez López, José Luis; Carreón Alvarez, Alejandra (Taylor & Francis, 2018)
      "In this research, we are reporting the treatment of tequila vinasse by a coagulation–flocculation process coupled with heterogeneous photocatalysis using two types of titanium dioxide nanoparticles, i.e. (1) commercial ...

    • Trends in nanoscience, nanotechnology, and carbon nanotubes: a bibliometric approach 

      Muñoz Sandoval, Emilio (2014)
      "Carbon nanotubes are currently one of the most important materials due to their strong mechanical resistance, light weight, and transport properties. Since the publication of Ijima’s paper on tubular carbon structures ...

    • Tuning emission in violet, blue, green and red in cubic GaN/InGaN/GaN quantum wells 

      Orozco Hinostroza, Ignacio Everardo; Ávalos Borja, Miguel; Compeán García, Vicente Damián; Cuellar Zamora, C.; Rodríguez Vázquez, Angel Gabriel; López Luna, Edgar; Vidal Borbolla, Miguel Ángel (Elsevier, 2016)
      "Light emission in the three primary colors was achieved in cubic GaN/InGaN/GaN heterostructures grown by molecular beam epitaxy on MgO substrates in a single growth process. A heterostructure with four quantum wells with ...

    • Tuning the dedoping process of PEDOT:PSS films using DBU-solvent complexes 

      Reyes Reyes, Marisol; López Sandoval, Román; Tovar Martínez, Eduardo; Cabrera Salazar, Jorge Valentín; Martínez Ponce, Geminiano (Elsevier, 2018)
      "In this study, we report a successful simple technique to dedope pristine PEDOT:PSS films at room temperature by dipping the films into 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) mixes with different solvents such as dimethyl ...

    • Two integrable classes of Emden-Fowler equations with applications in astrophysics and cosmology 

      Mancas, Stefan C; Rosu Barbus, Haret-Codratian (Walter de Gruyter GmbH, 2018)
      "We show that some Emden–Fowler (EF) equations encountered in astrophysics and cosmology belong to two EF integrable classes of the type d2z/dχ2=Aχ−λ−2zn for λ=(n−1)/2 (class 1), and λ=n+1 (class 2). We find their corresponding ...

    • Two sprayer CVD synthesis of nitrogen-doped carbon sponge-type nanomaterials 

      Muñoz Sandoval, Emilio; Fajardo Díaz, Juan Luis; Sánchez Salas, Roque; Cortés López, Alejandro Javier; López Urías, Florentino (2018)
      "Nitrogen-doped carbon sponge-type nanostructures (N-CSTNs) containing coaxial multiwalled carbon nanotubes are synthesized at 1020?°C by using a modified chemical vapor deposition (CVD) arrangement. Here, the CVD reactor ...

    • Two-dimensional DFA scaling analysis applied to encrypted images 

      Vargas Olmos, Cecilia; Murguía, José; Ramírez Torres, Marco Tulio; Mejía Carlos, Marcela; Rosu Barbus, Haret-Codratian; González-Aguilar, Hernán (2015)
      "The technique of detrended fluctuation analysis (DFA) has been widely used to unveil scaling properties of many different signals. In this paper, we determine scaling properties in the encrypted images by means of a ...