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Balcells, Ll. ; Beltrán Finez, Juan Ignacio ; Martínez-Boubeta, C. ; Konstantinovi?, Z. ; Arbiol, J. ; Martínez, B. | American Institute of Physics | 2010-12-20In this work we report on the magnetic behavior of MgO thin films prepared by sputtering. A severe aging process of the ferromagnetic properties is detected in magnetic samples exposed to ambient atmosphere. However, ferromagnetism can be succes[...]texto impreso
Casado-Amezúa, P. ; Araújo, R. ; Bárbara, I. ; Bermejo, R. ; Borja, Á. ; Díez, I. ; Fernández, C. ; Gorostiaga, J. M. ; Guinda, X. ; Hernández, I. ; Juanes, J. A. ; Peña, V. ; Peteiro, C. ; Puente, A. ; Quintana, I. ; Tuya, F. ; Viejo, R. M. ; Altamirano, M. ; Gallardo, T. ; Martínez, B. | Springer | 2019-04Canopy-forming seaweeds sustain critical ecosystem services in coastal habitats. Around the world, many of these seaweeds are suffering strong declines, mainly attributed to the progressive increase in sea surface temperature, in combination wit[...]texto impreso
Martínez-Boubeta, C. ; Beltrán Finez, Juan Ignacio ; Balcells, Ll. ; Konstantinovi?, Z. ; Valencia, S. ; Schmitz, D. ; Arbiol, J. ; Estrade, S. ; Cornil, J. ; Martínez, B. | American Physical Society | 2010-07-08We show both theoretical and experimental evidences of the appearance of ferromagnetism in MgO thin films. First principles calculations allow predicting the possibility of the formation of a local moment in MgO, provided the existence of Mg vac[...]texto impreso
Galceran, R. ; Balcells, Ll. ; Martínez-Boubeta, C. ; Bozzo, B. ; Cisneros-Fernández, J. ; Mata, M. de la ; Magén, C. ; Arbiol, J. ; Tornos, J. ; Cuéllar Jiménez, Fabián Andrés ; Sefrioui, Zouhair ; Cebollada, A. ; Golmar, F. ; Huesos, L.E. ; Casanova, F. ; Santamaría Sánchez-Barriga, Jacobo ; Martínez, B. | American Physical Society | 2015-09-16We report on magnetotransport properties on La_(0.7)Sr_(0.3)MnO_(3)/MgO/Fe tunnel junctions grown epitaxially on top of (001)-oriented SrTiO_(3) substrates by sputtering. It is shown that the magnetoresistive response depends critically on the M[...]texto impreso
Puig, T. ; Galante, F. ; González Herrera, Elvira María ; Vicent López, José Luis ; Martínez, B. ; Obradors, X. | American Physical Society | 1999-11-01The angular dependence of the in-plane resistivity ?(T,H, ?) of melt textured YBa_2Cu_3O_7/Y_2BaCuO_5 composites has been measured in a large range of magnetic fields and temperatures and from them, the intrinsic anisotropy of the superconductin[...]
