Listar Artículo en revista de investigación por autor "0000-0002-6522-8810"
Mostrando ítems 21-36 de 36
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Magnetocaloric effect in ErNi2 melt-spun ribbons
Sanchez Llamazares, J.L. (2019-08-17)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 ... -
Magnetoelastic transition and magnetocaloric effect in induction melted Fe100-xRhx bulk alloys with x = 50, 51
Sánchez Valdés, César Fidel; Arreguín-Hernández, M.L.; Sánchez Llamazares, J.L.; Ríos-Jara, D.; Pecharsky, V.K.; Blinov, M.I.; Prudnikov, V.N.; Kovalev, B.B.; Zverev, V.I.; Tishin, A.M. (2021-03-23)Magnetoelastic transitions (METs) in bulk in nearly equiatomic Fe-Rh alloys produced by arc melting may show poor reproducibility related to insufficient chemical homogeneity and presence of impurity phases in variable ... -
Magnetostructural transition and magnetocaloric effect in thermally annealed Mn0.5Fe0.5NiSi0.945Al0.055 melt-spun ribbons
Sánchez Valdés, César Fidel; Arreguín-Hernández, M.L.; Sánchez-Llamazares, J. L. (2021-04-19)Were fabricated melt-spun ribbons of the quinary alloy Mn0.5Fe0.5NiSi0.945Al0.055. After an annealing time of 4 h at temperatures between 1073 K and 1223 K, samples underwent a martensitic-like magnetostructural transformation ... -
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 ... -
Magnetostructural transitions and magnetocaloric effects in Ni50Mn35In14.25B0.75 Ribbons
Pandey, Sudip (2018-01-12)The structural, thermal, and magnetic behaviors, as well as the martensitic phase transformation and related magnetocaloric response of Ni50Mn35In14.25B0.75 annealed ribbons have been investigated using room-temperature ... -
Micro-macro asymptotic approach applied to heterogeneous elastic micropolar media. Analysis of some examples
Espinosa-Almeyda, Yoanh; Sánchez Valdés, César Fidel; Rodríguez-Ramos, R.; Yanes, V.; Otero, J.A.; Sabina, F.J.; Lebon, F. (2022-01-29)In this work, the derivation of the effective properties for heterogeneous micropolar media with periodic structure using the two-scale asymptotic homogenization method (AHM) is reported. Analytical expressions for the ... -
Ni-Co-Mn-Sn quaternary alloys: magnetic hysteresis loss reduction and ductility enhancement by iron alloying
Chen, F. (2019-09-01)The influence of Fe-alloying on the structural transition temperatures, microstructure, and mechanical and magnetocaloric properties of polycrystalline Ni41Co9−xFexMn40Sn10 (at. %) (x = 0–3) alloys has been studied. The ... -
On the synthesis, structural transformation and magnetocaloric behavior of Ni37.5Co12.5Mn35Ti15 melt-spun ribbons
Sánchez Valdés, César Fidel; López-Cruz, M.; Zamora, J.; Sánchez Llamazares, J.L. (2021-01-06)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
Sánchez Valdés, César Fidel; Yang, Yiqiao; Li, Zongbin; Sánchez Llamazares, José Luis; Yang, Bo; Zhang, Yudong; Esling, Claude; Zhao, Xiang; Zuo, Liang (2020-08-06)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 (2018-01-01)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 of ... -
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 ... -
Synthesis, structural, and magnetic properties of Heusler-type Mn2-xFe1+xGe (0.0 ≤ x ≤ 1.0) alloys
Sánchez Valdés, César Fidel; Aryal, Anil; Dubenko, Igor; Zamora, J.; Sánchez Llamazares, J.L.; Mazumdar, Dipanjan; Talapatra, Saikat; Stadler, Shane; Ali, Naushad (2021-07-21)Bulk Mn2-xFe1+xGe (0.0 ≤ x ≤ 1.0) alloys have been synthesized by arc-melting followed by a low temperature homogenization thermal annealing, whereas for comparison purposes the Mn2FeGe alloy was also produced in ribbon ... -
The effect of cooling rate on magnetothermal properties of Fe49Rh51
Sanchez Valdes, Cesar Fidel (2020)We have investigated the effects of quenching rate on the thermal dependence of the magnetic entropy change ΔSM(T) and the magnetic field induced hysteresis loss through the antiferromagnetic (AFM) ↔ ferromagnetic (FM) ... -
Tuning the reversible magnetocaloric effect in Ni-Mn-In based alloys through Co and Cu co-doping
Li, Zongbin (2019-03-01)The reversibility of the giant magnetocaloric effect (MCE) through the magnetic field–induced magnetostructural transformation in Ni–Mn–In‐based alloys is a key issue towards the potential magnetic refrigeration applications. ... -
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 ...