93 citations · 521 across the 20 of their papers we have counts for
20 papers
Unraveling structural and magnetic information during growth of nanocrystalline SrFe12O19
Cecilia Granados-Miralles, Matilde Saura-Múzquiz, Espen D. Bøjesen +3
The hydrothermal synthesis of magnetic strontium hexaferrite (SrFe12O19) nanocrystallites was followed in situ using synchrotron powder X-ray diffraction. For all the studied tempe…
Magnetic Circular Dichroism at the Oxygen K edge in Microcrystals of Spinels Grown on Ru(0001)
A. Mandziak, V. Sosa, P. Nita +10
We have measured the circular magnetic dichroism in the x-ray absorption at the K-edge of oxygen in microcrystals of different spinel oxides. The microcrystals are islands of micro…
The Chemistry of Spinel Ferrite Nanoparticle Nucleation, Crystallization, and Growth
Henrik L. Andersen, Cecilia Granados-Miralles, Kirsten M. O. Jensen +2
The nucleation, crystallization, and growth mechanisms of MnFe2O4, CoFe2O4, NiFe2O4, and ZnFe2O4 nanocrystallites prepared from coprecipitated transition metal (TM) hydroxide precu…
Modulating the magnetic properties of Fe3C/C encapsulated core/shell nanoparticles for potential prospects in biomedicine
A. Castellano-Soria, R. Lopez-Mendez, A. Espinosa +5
In the pursuit of alternative and less invasive medical treatments, magnetic nanoparticles (NPs) have gained significant relevance. Iron carbides NPs stand out for their higher sat…
Permanent Magnets Based on Hard Ferrite Ceramics
Cecilia Granados-Miralles, Matilde Saura-Múzquiz, Henrik L. Andersen
Permanent magnets are integral components in many of the modern technologies that are critical for the transition to a sustainable society. However, most of the high-performance (B…
On the potential of hard ferrite ceramics for permanent magnet technology -- a review on sintering strategies
Cecilia Granados-Miralles, Petra Jenuš
A plethora of modern technologies rely on permanent magnets for their operation, including many related to the transition towards a sustainable future, such as wind turbines or ele…
Dense strontium hexaferrite-based permanent magnet composites assisted by cold sintering process
Eduardo García-Martín, Cecilia Granados-Miralles, Sandra Ruiz-Gómez +7
The use of rare-earth-based permanent magnets is one of the critical points for the development of the current technology. On the one hand, industry of the rare-earths is highly po…
In-depth investigations of size and occupancies in cobalt ferrite nanoparticles by joint Rietveld refinements of X-ray and neutron powder diffraction data
K. Henry, J. V. Ahlburg, H. L. Andersen +4
Powder X-ray diffraction (PXRD) and neutron powder diffraction (NPD) have been used to investigate the crystal structure of CoFe2O4 nanoparticles prepared via different hydrotherma…
Greener processing of SrFeO ceramic permanent magnets by two-step sintering
J. C. Guzmán-Mínguez, V. Fuertes, C. Granados-Miralles +2
With an annual production amounting to 800 kilotons, ferrite magnets constitute the largest family of permanent magnets in volume, a demand that will only increase as a consequence…
Novel one-pot sol-gel synthesis route of Fe3C/few-layered graphene core/shell nanoparticles embedded in a carbon matrix
Alberto Castellano-Soria, Jesús López-Sánchez, Cecilia Granados-Miralles +4
Fe3C/few-layered graphene core/shell nanoparticles embedded in a carbon matrix are synthesized by a novel two-step surfactant sol-gel strategy, where the processes of hydrolysis, p…
CoSb3-based skutterudite nanocomposites prepared by cold sintering process with enhanced thermoelectric properties
Aida Serrano, Olga Caballero-Calero, Cecilia Granados-Miralles +6
We show here for the first time the use of a cold sintering process (CSP) to sinter CoSb3-based thermoelectric materials. CSP at 150 °C for 90 min under a uniaxial pressure of 750…
Quantifying Li-content for compositional tailoring of lithium ferrite ceramics
C. Granados-Miralles, A. Serrano, P. Prieto +6
Owing to their multiple applications, lithium ferrites are relevant materials for several emerging technologies. For instance, LiFeO2 has been spotted as an alternative cathode mat…
A Platform for Addressing Individual Magnetite Islands Grown Epitaxially on Ru(0001) and Manipulating Their Magnetic Domains
Sandra Ruiz-Gómez, Eva María Trapero, Claudia Fernández-González +8
We have grown high-quality magnetite micrometric islands on ruthenium stripes on sapphire through a combination of magnetron sputtering (Ru film), high-temperature molecular beam e…
Approaching Ferrite-Based Exchange-Coupled Nanocomposites as Permanent Magnets
Cecilia Granados-Miralles, Matilde Saura-Múzquiz, Henrik L. Andersen +5
During the past decade, CoFe2O4 (hard)/Co-Fe alloy (soft) magnetic nanocomposites have been routinely prepared by partial reduction of CoFe2O4 nanoparticles. Monoxide (i.e., FeO or…
Expanding the tunability and applicability of exchange-coupled/decoupled magnetic nanocomposites
Cecilia Granados-Miralles, Adrián Quesada, Matilde Saura-Múzquiz +3
CoFe2O4/Co-Fe magnetic composites are usually prepared through partial reduction of CoFe2O4, which often yields monoxides (i.e., FeO, CoO) as secondary phases. Since these compound…
Tuning the Néel temperature in an antiferromagnet: the case of NixCo1-xO microstructures
Anna Mandziak, Guiomar D. Soria, José Emilio Prieto +6
We show that it is possible to tune the Néel temperature of nickel(II)-cobalt(II) oxide films by changing the Ni to Co ratio. We grow single crystalline micrometric triangular isla…
Hexaferrite-based permanent magnets with upper magnetic properties by cold sintering process via a non-aqueous solvent
Aida Serrano, Eduardo García-Martín, Cecilia Granados-Miralles +6
The incessant technological pursuit towards a more sustainable and green future depends strongly on permanent magnets. At present, their use is widespread, making it imperative to…
Remanence Increase in SrFeO/Fe Exchange-Decoupled Hard-Soft Composite Magnets Owing to Dipolar Interactions
Jesús Carlos Guzmán-Mínguez, Cecilia Granados-Miralles, Patrick Kuntschke +6
In the search for improved permanent magnets, fueled by the geostrategic and environmental issues associated with rare-earth-based magnets, magnetically hard (high anisotropy)-soft…
Size effects in the Verwey transition of nanometer-thick micron-wide magnetite crystals
Adolfo del Campo, Sandra Ruiz-Gómez, Eva M. Trapero +6
We have monitored the Verwey transition in micrometer-wide, nanometer-thick magnetite islands on epitaxial Ru films on Al2O3(0001) using Raman spectroscopy. The islands have been g…
Influence of the growth conditions on the magnetism of SrFeO thin films and the behavior of Co / SrFeO bilayers
G. D. Soria, J. F. Marco, A. Mandziak +11
SrFeO (SFO) films grown on Si (100) substrates by radio-frequency magnetron sputtering have been characterized in terms of composition, structural and magnetic proper…