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Dr. C.F. Sánchez-Valdés
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Representative Publications
View All Publications27 January 2014 in Applied Physics Letters
Journal Article
ZLZongbin Li
Zongbin Li
YZYudong Zhang
Yudong Zhang
CSC.F. Sánchez-Valdés
C.F. Sánchez-Valdés
José Luis Sanchez LlamazaresCEClaude Esling
Claude Esling
LZLiang Zuo
Liang Zuo +1
Magnetic refrigeration based on the magnetocaloric effect (MCE) may provide an energy-efficient and environment-friendly alternative to the conventional gas compression/expansion cooling technology. For potential applications, low-cost and high-performance magnetic refrigerants are in great need. Here, we demonstrate that giant MCE can be achieved in annealed Ni52Mn26Ga22 ribbons with magneto-multistructural transformation. It yields a maximum magnetic entropy change of −30.0 J kg−1 K−1 at the magnetic field change of 5 T, being almost three times as that of initial melt-spun ribbons and comparable to or even superior to that of polycrystalline bulk alloys.
1 November 2015 in Applied Surface Science
Journal Article
MVM.A. Valverde-Alva
M.A. Valverde-AlvaTGTupak García-Fernández
Tupak García-FernándezMVM. Villagrán-Muniz
M. Villagrán-Muniz
CSC. Sánchez-Aké
C. Sánchez-Aké
RCR. Castañeda-Guzmán
R. Castañeda-Guzmán
CHC.E. Márquez Herrera
C.E. Márquez Herrera
+3
5 August 2019 in Advanced Materials
Journal Article
AAAraceli Aznar
Araceli Aznar
PLPol Lloveras
Pol Lloveras
JKJi‐Yeob Kim
Ji‐Yeob Kim
ESEnric Stern‐Taulats
Enric Stern‐Taulats
MBMaría Barrio
María Barrio
XMXavier Moya
Xavier Moya +4
Hydrostatic pressure represents an inexpensive and practical method of driving caloric effects in brittle magnetocaloric materials, which display first‐order magnetostructural phase transitions whose large latent heats are traditionally accessed using applied magnetic fields. Here, moderate changes of hydrostatic pressure are used to drive giant and reversible inverse barocaloric effects near room temperature in the notoriously brittle magnetocaloric material MnCoGeB0.03. The barocaloric effects compare favorably with those observed in barocaloric materials that are magnetic. The inevitable fragmentation provides a large surface for heat exchange with pressure‐transmitting media, permitting good access to barocaloric effects in cooling devices.
1 January 2018 in IUCrJ
Journal Article
ZLZongbin Li
Zongbin LiYJYiwen Jiang
Yiwen JiangZLZhenzhuang Li
Zhenzhuang Li
CSC.F. Sánchez-Valdés
C.F. Sánchez-ValdésJosé Luis Sanchez LlamazaresLZLiang Zuo
Liang Zuo +4
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 great significance for scientific and technological purposes. This work demonstrates that strong magnetostrucural coupling can be achieved over a wide temperature range (222 to 355 K) in Co-doped high Mn-content Mn50Ni42−x
Co
x
Sn8 (0 ≤ x ≤ 10) melt-spun ribbons. It is shown that, over a wide composition range with Co content from 3 to 9 at.%, the paramagnetic austenite first transforms into ferromagnetic austenite at T C on cooling, then the ferromagnetic austenite further transforms into a weakly magnetic martensite at T M. Such strong magnetostructural coupling enables the ribbons to exhibit field-induced inverse martensitic transformation behaviour and a large magnetocaloric effect. Under a field change of 5 T, a maximum magnetic entropy change ΔS M of 18.6 J kg−1 K−1 and an effective refrigerant capacity RC eff of up to 178 J kg−1 can be achieved, which are comparable with or even superior to those of Ni-rich Ni–Mn-based polycrystalline bulk alloys. The combination of high performance and low cost makes Mn–Ni–Co–Sn ribbons of great interest as potential candidates for magnetic refrigeration.
5 February 2019 in Advanced Electronic Materials
Journal Article
ZLZongbin Li
Zongbin LiJYJiajing Yang
Jiajing Yang
DLDong Li
Dong Li
ZLZhenzhuang Li
Zhenzhuang Li
BYBo Yang
Bo Yang
LZLiang Zuo
Liang Zuo +6
1 January 2019 in Scripta Materialia
Journal Article
ZLZongbin Li
Zongbin Li
SDShuya Dong
Shuya Dong
ZLZhenzhuang Li
Zhenzhuang Li
BYBo Yang
Bo Yang
FLFang Liu
Fang Liu
LZLiang Zuo
Liang Zuo
+5
About Me
César Fidel Sánchez Valdés was born in 1982 in Havana (Cuba) and obtained a bachelor's degree in Physics from the University of Havana (2006). He obtained his Materials Science PhD and master's degree from the Autonomous University of Barcelona (Spain, 2013 and 2010) and worked at the Institute of Materials Science of Barcelona (ICMAB) for 4 years. He has been working as a full-time Professor in the Physic and Mathematics Department at the Institute of Engineering and Technology, Autonomous University of Juarez (UACJ), since 2016. Since 2003, he has been interested in condensed matter physics and material technology, focusing on magnetic (magnetocaloric refrigerants, permanent magnets, and multiferroic stacks) and superconducting materials (coated conductors: BSCCO, YBCO). He has co-authored more than 80 articles and book chapters (1770 citations, h-index = 24). He has filed 4 patents (Mexico and the USA) and made many contributions to scientific congresses. He has supervised 1 postdoctoral researcher, and 1 PhD, 1 master's, and 5 bachelor's theses. He has received the Mexican National Researcher level 1 distinction by SNII-SECIHTI (2015-2026) and the level 2 distinction as a Chihuahua State Researcher (2025-2028). He has been the Principal Investigator of 2 national grants (in magnetocaloric refrigerants) and of 13 national projects. He has been a member of the evaluation committee for different agencies and a peer reviewer for several indexed journals.