Publicaciones 2011-2020

@article{RN206,
title = {Magnetic Properties and Crystal Structure of Solid-Solution Cu2mnxfe1-Xsns4 Chalcogenides with Stannite-Type Structure},
author = { F. Lopez-Vergara and A. Gald\'{a}mez and V. Manriquez and P. Barahona and O. Pena},
url = {/brokenurl#<Go to ISI>://WOS:000335983000008},
doi = {10.1002/pssb.201350038},
issn = {0370-1972},
year = {2014},
date = {2014-01-01},
journal = {Physica Status Solidi B-Basic Solid State Physics},
volume = {251},
number = {5},
pages = {958-964},
publisher = {2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.},
abstract = {New solid solutions Cu2MnxFe1-xSnS4 were prepared by direct combination of the corresponding elements at 850 degrees C. The crystal structure of Cu2Mn0.4Fe0.6SnS4 was determined by single-crystal X-ray diffraction. This phase is described in the space group I (4) over bar 2m where each cation is tetrahedrally coordinated to four sulfur anions in a sphalerite-like arrangement. The XRD patterns of the solid solutions Cu2MnxFe1-xSnS4 were fully indexed in the space group I (4) over bar 2m and the values of the cell parameter for all phases obey the usual linear Vegard behavior. A progressive evolution of the magnetic moment in the paramagnetic state is observed when increasing the content of manganese. The negative values of the Curie-Weiss constant, indicate an antiferromagnetic (AF) behavior with AF interactions, weaker by more than one order of magnitude compared to other diluted magnetic semiconductors (DMSs) with zinc-blende or wurzite crystal structure., [GRAPHICS],},
keywords = {chalcogenides, crystal cu2fesns4, kesterite, magnetic model properties, semiconductors, structure, tetrahedra volumes},
pubstate = {published},
tppubtype = {article}
}

@article{RN147,
title = {Cu2mn1-Xcoxsns4: Novel Kesterite Type Solid Solutions},
author = { F. Lopez-Vergara and A. Gald\'{a}mez and V. Manriquez and P. Barahona and O. Pena},
url = {/brokenurl#<Go to ISI>://WOS:000314320800056},
doi = {10.1016/j.jssc.2012.10.026},
issn = {0022-4596},
year = {2013},
date = {2013-01-01},
journal = {Journal of Solid State Chemistry},
volume = {198},
pages = {386-391},
publisher = {2012 Published by Elsevier Inc.},
abstract = {A new family of Cu2Mn1-xCoxSnS4 chalcogenides has been synthesized by conventional solid-state reactions at 850 degrees C. The reactions products were characterized by powder X-ray diffraction (XRD), energy-dispersive X-ray analysis (SEM-EDS), Raman spectroscopy and magnetic susceptibility. The crystal structures of two members of the solid solution series Cu2Mn0.4Co0.6SnS4 and Cu2Mn0.2Co0.8SnS4 have been determined by single-crystal X-ray diffraction. Both phases crystallize in the tetragonal kesterite-type structure (space group I (4) over bar). The distortions of the tetrahedral volume of Cu2Mn0.4 Co0.6SnS4 and Cu2Mn0.2Co0.8SnS4 were calculated and compared with the corresponding differences in the Cu2MnSnS4 (stannite-type) end-member. The compounds show nearly the same Raman spectral features. Temperature-dependent magnetization measurements (ZFC/FC) and high-temperature susceptibility indicate that these solid solutions are antiferromagnetic.},
keywords = {alloys, chalcogenide, chalcogenides, crystal crystal-structures, gap, kesterite, mixed-crystals, series, solar-cells, solution stannite, structure, synthesis, tetrahedra volumes, zn},
pubstate = {published},
tppubtype = {article}
}