Listar IIT por autor "Sánchez Llamazares, J. L."
Mostrando ítems 1-8 de 8
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Critical behavior in hexagonal Y2Fe17: magnetic interactions crossover from 3D to 2D Ising model
Sánchez Valdés, César Fidel; Fan, Jiyu; Huang, Can; Liu, Hao; Yang, Yu-E; Sánchez Llamazares, J. L.; Qian, Fengjiao; Gorria, Pedro; Zhu, Yan; Yang, Hao (2021-04-13)The critical behavior of single phase Y2Fe17 melt-spun ribbons with the Th2Fe17-type crystal structure has been studied around the transition temperature (TC). This alloy undergoes a second-order ferromagnetic (FM)–paramagnetic ... -
Enhanced magnetocaloric effect in rapidly solidified HoNi2 melt-spun ribbons
Sánchez Llamazares, J. L. (2019-02-05)The structural, magnetic and magnetocaloric properties of HoNi2 melt-spun ribbons were investigated by X-ray diffraction, magnetization and specific heat measurements. The as-solidified ribbons samples produced are single ... -
Giant low-field magnetocaloric effect in Si alloyed Ni-Co-Mn-In alloys
Li, Zongbin (2019-01-15)For NiMn-based Heusler alloys, simultaneously achieving high magnetization difference and low thermal hysteresis across the magnetostructural transformation is of crucial importance to obtain large low-field actuated ... -
Large magnetic entropy change and refrigeration capacity around room temperature in quinary Ni41Co9-xFexMn40Sn10 alloys (x= 2.0 and 2.5)
Sánchez Valdés, César Fidel (2020-06-05)We report the magnetocaloric properties of two Fe-containing quinary bulk polycrystalline alloys of nominal compositions Ni41Co7Fe2Mn40Sn10 and Ni41Co6.5Fe2.5Mn40Sn10 that were determined by indirect and direct methods. ... -
Magnetostructural transition and magnetocaloric effect in thermally annealed Mn0.5Fe0.5NiSi1-xAlx melt-spun ribbons (x= 0.055 and 0.060)
Sánchez Valdés, César Fidel; Arreguin Hernández, M.L.; Dzubinska, A.; Reiffers, M.; Sánchez Llamazares, J. L.; Varga, R. (2023-02-08)Melt-spun ribbons samples of the multicomponent alloy Mn0.5Fe0.5NiSi0.940Al0.060 were prepared and the magnetostructural transition (MST) and related magnetocaloric properties studied for as-solidified ribbons and ribbon ... -
Superparamagnetic state in La0.7Sr0.3MnO3 thin films obtained by rf-sputtering
Sánchez Valdés, César Fidel (2020-02-13)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 ... -
Unveiling quantum superparamagnetism by interacting monodomains in multiferroic Er-doped bismuth ferrate nanostructured particles
Sánchez Valdés, César Fidel; Sharma, Subhash; Sánchez Llamazares, J. L.; Siqueiros, J. M.; Raymond Herrera, Oscar (2021-03-15)In the last few years, the quantum superparamagnetic (QSP) phenomenon has been reported in isolated ultrasmall nanoparticles. In this work, a QSP state and superparamagnetic (SP) state in nanostructured Er-doped BiFeO3 ... -
Wide structural and magnetic successive transitions and related magnetocaloric properties in a directionally solidified polycrystalline Ni-Co-Mn-In alloy
Sánchez Valdés, César Fidel; Chen, F.; Sánchez Llamazares, J. L.; Müllner, P.; Tong, Y. X.; Li, L. (2020-02-21)We fabricated a Ni45Co6.4Mn37In11.6 polycrystalline sample with a specific texture by directional solidification. The alloy is characterized by wide successive structural and magnetic phase transitions that considerably ...