Search Results - "Hernandez, F. Martin"

Preparation and study of silica and APTES–silica-modified NiFe2O4 nanocomposites for removal of Cu2+ and Zn2+ ions from aqueous solutions by Isasi, J., Arévalo, P., Martin, E., Martín-Hernández, F.

“…Silica and (3-aminopropyl)triethoxysilane (APTES)–silica-modified NiFe 2 O 4 samples were successfully synthesized by a two-/three-step process, depending on…”
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Magnetic and structural studies of Fe3O4 nanoparticles synthesized via coprecipitation and dispersed in different surfactants by Arévalo, P., Isasi, J., Caballero, A.C., Marco, J.F., Martín-Hernández, F.

“…We present a study of the structural characteristics and magnetic behavior of Fe3O4 nanoparticles synthesized via coprecipitation and dispersed in different…”
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Structural and magnetic studies of NiFe2O4 and NiFe2O4@SiO2-Silane agent samples useful for the removal of Cu2+ ions by Ferrer, C., Isasi, J., Arévalo, P., Fernández-Ramos, M., Rapp, M., Alcolea, M., Marco, J.F., Martín-Hernández, F.

“…•The optimal conditions for synthesis of pure NiFe2O4 samples with the smallest particle size were determined.•The effect of urea/KOH concentration,…”
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On the reliability of the AMS ellipsoid by statistical methods by Guerrero-Suarez, S., Martín-Hernández, F.

“…Weak magnetic materials whose susceptibility values are close to the instrument's accuracy show very large errors in the direct evaluation of their ellipsoid…”
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Craton vs. rift uppermost mantle contributions to magnetic anomalies in the United States interior by Friedman, S.A., Feinberg, J.M., Ferré, E.C., Demory, F., Martín-Hernández, F., Conder, J.A., Rochette, P.

“…The interpretation of satellite magnetic information (Magsat, Oersted, CHAMP, Swarm) requires the understanding of the mineralogy of crustal and mantle…”
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Magnetic anisotropy of hematite natural crystals: increasing low-field strength experiments by Guerrero-Suarez, S., Martín-Hernández, F.

“…Hematite is a very abundant mineral in natural rock samples. Despite being one of the most important carriers of remanent magnetization, its magnetic…”
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Magnetic properties and anisotropy constant of goethite single crystals at saturating high fields by Martin-Hernandez, F., García-Hernández, M. M.

“…The applied fields in previous studies of goethite's magnetic properties were often not sufficiently high to reach reversible magnetization behaviour of the…”
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Magnetic anisotropy behaviour of pyrrhotite as determined by low- and high-field experiments by Martín-Hernández, F., Dekkers, M. J., Bominaar-Silkens, I. M. A., Maan, J. C.

“…Here we report on the sources of magnetic anisotropy in pyrrhotite, an iron sulphide present in many rocks as an important carrier of the Natural Remanent…”
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Intraplate deformation during Gondwana breakup: a study of the Jurassic units of the Cañadón Asfalto Basin (extra-Andean Patagonia, Argentina) by Ruiz González, V, Renda, E M, Vizán, H, Martín-Hernández, F, Palencia-Ortas, A, Osete, M L

“…In this study, we present the results of palaeomagnetic research conducted on Jurassic units of the Cañadón Asfalto Basin (CAB) in Patagonia, formed during…”
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Comparative structural, morphological and magnetic study of MFe2O4 nanopowders prepared by different synthesis routes by Arévalo-Cid, P., Isasi, J., Alcolea Palafox, M., Martín-Hernández, F.

“…[Display omitted] •MFe2O4 nanoparticles (M = Fe, Co, Ni) are prepared by three different methods.•Co presence increases the particles size, while Ni decreases…”
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Haematite natural crystals: non-linear initial susceptibility at low temperature by Guerrero-Suarez, S., Martín-Hernández, F.

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Geomagnetic field intensity changes in the Central Mediterranean between 1500 BCE and 150 CE: Implications for the Levantine Iron Age Anomaly evolution by Rivero-Montero, M., Gómez-Paccard, M., Kondopoulou, D., Tema, E., Pavón-Carrasco, F.J., Aidona, E., Campuzano, S.A., Molina-Cardín, A., Osete, M.L., Palencia-Ortas, A., Martín-Hernández, F., Rubat-Borel, F., Venturino, M.

“…•New 37 archeointensities for the Central Mediterranean (1500 BCE–150 CE).•First evidence of a rapid intensity change between 1070 and 1040 BCE in Greece.•The…”
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Two archaeomagnetic intensity maxima and rapid directional variation rates during the Early Iron Age observed at Iberian coordinates. Implications on the evolution of the Levantine Iron Age Anomaly by Osete, M.L., Molina-Cardín, A., Campuzano, S.A., Aguilella-Arzo, G., Barrachina-Ibañez, A., Falomir-Granell, F., Oliver Foix, A., Gómez-Paccard, M., Martín-Hernández, F., Palencia-Ortas, A., Pavón-Carrasco, F.J., Rivero-Montero, M.

“…•New archaeomagnetic data from the Early Iron Ages were obtained for Spain.•High geomagnetic fluctuation rates up to 8° and 16 μT/century were observed.•A new…”
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Further progress in the study of epsilon iron oxide in archaeological baked clays by López-Sánchez, J., Palencia-Ortas, A., del Campo, A., McIntosh, G., Kovacheva, M., Martín-Hernández, F., Carmona, N., Rodríguez de la Fuente, O., Marín, P., Molina-Cardín, A., Osete, M.L.

“…The occurrence of ε-Fe2O3 in archaeological samples that have been subjected to high temperatures is gradually being detected by the use of micrometric…”
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Refining geomagnetic field intensity changes in Europe between 200 CE and 1800 CE. New data from the Mediterranean region by Rivero-Montero, M., Gómez-Paccard, M., Pavón-Carrasco, F.J., Cau-Ontiveros, M.A., Fantuzzi, L., Martín-Hernández, F., Palencia-Ortas, A., Aidona, E., Tema, E., Kondopoulou, D., Mas-Florit, C., Ramon-Torres, J.

“…Absolute past geomagnetic intensity values can mainly be recovered by fired archaeological materials and volcanic rocks. Here, we present 10 new…”
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First Full‐Vector Archeomagnetic Data From Central Asia (3 BCE to 15 CE Centuries): Evidence for a Large Non‐Dipole Field Contribution Around the First Century BCE by Bonilla‐Alba, R., Gómez‐Paccard, M., Pavón‐Carrasco, F. J., Campuzano, S. A., Beamud, E., Martínez‐Ferreras, V., Gurt‐Esparraguera, J. M., Ariño‐Gil, E., Martín‐Hernández, F., Osete, M. L.

“…Unraveling the short‐term behavior of the Earth's past geomagnetic field at regional scales is crucial for understanding its global behavior and, thus, the…”
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The response of a chromium doped alumina screen to keV and MeV ions by McCarthy, Kieran J., Garcı́a López, J., Martı́n Hernández, F., Zurro, Bernardo, Baciero, A., Respaldiza, M.A.

“…We have characterised the response of a chromium-doped alumina screen ‘ Chromox’ to light ions (H + and He +) accelerated to keV and MeV energies. In…”
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Rapid Intensity Decrease During the Second Half of the First Millennium BCE in Central Asia and Global Implications by Bonilla‐Alba, R., Gómez‐Paccard, M., Pavón‐Carrasco, F. J., Río, J. del, Beamud, E., Martínez‐Ferreras, V., Gurt‐Esparraguera, J. M., Ariño‐Gil, E., Palencia‐Ortas, A., Martín‐Hernández, F., Chauvin, A., Osete, M. L.

“…Recent paleomagnetic studies have shown that important short‐lived intensity fluctuations occurred during the first millennium BCE. However, the knowledge of…”
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Comparative study of core-shell nanostructures based on amino-functionalized Fe3O4@SiO2 and CoFe2O4@SiO2 nanocomposites by Arévalo-Cid, P., Isasi, J., Martín-Hernández, F.

“…Fe3O4@SiO2 and CoFe2O4@SiO2 and their corresponding amino-functionalized nanocomposites were successfully synthesized by a process of two steps including the…”
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The anisotropy of magnetic susceptibility in biotite, muscovite and chlorite single crystals by Martı́n-Hernández, Fátima, Hirt, Ann M

“…The anisotropy of magnetic susceptibility (AMS) of single crystals of biotite, muscovite and chlorite has been measured in order to provide accurate values of…”
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