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Artículo
Characterization of the magnetic interactions of multiphase magnetocaloric materials using first-order reversal curve analysis
(AIP Publishing, 2015-04-28)
In order to understand the magnetocaloric response of materials, it is important to analyze the interactions between the different phases present in them. Recent models have analyzed the influence of these interactions on ...
Artículo
The magnetocaloric effect and critical behavior in amorphous Gd 60Co 40-xMn x alloys.
(AIP Publishing, 2012)
The amorphous alloys Gd60Co40−xMnx (x = 0, 5, 10, 15) were prepared by melt spinning. The Curie temperature,T c, increases monotonously with Mn addition, ranging from 198 K for x = 0 to 205 K for x = 15, while the maximum ...
Artículo
Optimization of the refrigerant capacity in multiphase magnetocaloric materials
(AIP Publishing, 2011-03-09)
The refrigerant capacity (RC) of magnetocaloric materials can be enhanced using multiphase materials or composites, which expand the temperature range over which a significant magnetic entropy change can be obtained. ...
Artículo
Procedure to use phosphogypsum industrial waste for mineral CO 2 sequestration
(Elsevier, 2011)
Industrial wet phosphoric acid production in Huelva (SW Spain) has led to the controversial stockpiling of waste phosphogypsum by-products, resulting in the release of significant quantities of toxic impurities in salt ...
Artículo
Removal of basic yellow cationic dye by an aqueous dispersion of Moroccan stevensite
(Elsevier, 2013)
The aim of this study was to investigate the adsorption of basic yellow, a cationic dye, from aqueous solution by natural stevensite, with 104m2/g of specific surface area. The kinetics and the effects of several experimental ...
Artículo
Evolution of Fe environments and phase composition during mechanical amorphization of Fe70Zr30 and Fe70Nb30 alloys
(Elsevier, 2018)
Amorphous Fe-Zr and Fe-Nb alloys with 70 at.% Fe have been prepared by ball milling a mixture of elemental powders. The combination of Mössbauer spectroscopy, X-ray diffraction, scanning electron microscopy and differential ...
Artículo
On the use of classical JMAK crystallization kinetic theory to describe simultaneous processes leading to the formation of different phases in metals
(2015)
The classical theory of Johnson-Mehl-Avrami-Kolmogorov (JMAK) is widely used to describe the kinetics of crystallization even when the premises required for its application are not strictly fulfilled. In this paper we ...
Artículo
Evidence of nanograin cluster coalescence in spark plasma sintered α-Al2O3
(Elsevier, 2013)
The aim of this study is to elucidate the coarsening kinetics involved during densification of fine-grained pure α-alumina by spark plasma sintering. Low temperature and short dwell time sintering conditions were used to ...
Artículo
¿Puede la situación geográfica de España explicar las aparentes anomalías de sus horarios sociales?
(Real Sociedad Española de Física, 2015-04)
Se analizan los horarios de inicio y fin de jornada de los trabajadores de regiones de España, Italia, Reino Unido e Irlanda a partir de datos obtenidos de sus respectivas Encuestas de Uso del Tiempo. Los horarios civiles ...
Artículo
Modification of the order of the magnetic phase transition in cobaltites without changing their crystal space group
(Elsevier, 2019-03)
It has been found that GdBa1-xSrxCo2O6-δ can exhibit consecutive magnetic transitions: antiferromagnetic-ferromagnetic (AFM-FM) transition followed by ferromagnetic-paramagnetic transition (FM-PM), which give rise to a ...