B
Benjamín Martínez
Researcher at Institute of Cost and Management Accountants of Bangladesh
Publications - 84
Citations - 4930
Benjamín Martínez is an academic researcher from Institute of Cost and Management Accountants of Bangladesh. The author has contributed to research in topics: Thin film & Magnetization. The author has an hindex of 27, co-authored 79 publications receiving 4673 citations. Previous affiliations of Benjamín Martínez include Autonomous University of Barcelona & Spanish National Research Council.
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Low Temperature Surface Spin-Glass Transition in γ - Fe 2 O 3 Nanoparticles
TL;DR: In this paper, a spin-glass-like transition was found in magnetic nanoparticles, with a very high surface to volume ratio, exhibiting both strong exchange anisotropy and magnetic training effect.
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Surface and Internal Spin Canting in γ-Fe2O3 Nanoparticles
María del Puerto Morales,Sabino Veintemillas-Verdaguer,M.I. Montero,Carlos J. Serna,Anna Roig,Ll. Casas,Benjamín Martínez,Felip Sandiumenge +7 more
TL;DR: In this article, structural and magnetic properties of isometric nanoparticles ranging from 3 to 14 nm with a narrow particle size distribution have been studied, and it has been shown that there is a strong dependence on the average crystallite size.
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Colossal magnetoresistance of ferromagnetic manganites: Structural tuning and mechanisms.
Josep Fontcuberta,Benjamín Martínez,A. Seffar,S. Piñol,José Luis García-Muñoz,Xavier Obradors +5 more
TL;DR: The amplitude $\ensuremath{\rho}(T,H)$ and temperature ${T}_{M}$ and CMR are found to be controlled by the radius of the lanthanide $({L}^{3+})$ which modifies the bending of the Mn-O-Mn bond.
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Cationic ordering control of magnetization in Sr2FeMoO6 double perovskite
TL;DR: The role of the synthesis conditions on the cationic Fe/Mo ordering in Sr2FeMoO6 double perovskite is addressed in this paper, where it is shown that this ordering can be controlled and varied systematically.
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High-field magnetoresistance at interfaces in manganese perovskites
TL;DR: In this article, the authors investigated the low-field and high-field magnetoresistance response of LMO samples with grain sizes ranging from 10 to 20 nm and revealed a clear relationship between the thickness, the intergranular resistance, and the height of the surface energy barrier.