Zobrazeno 1 - 10
of 23
pro vyhledávání: '"V. A. Peña Rodríguez"'
Publikováno v:
Revista de Investigación de Física, Vol 7, Iss 01-02 (2004)
Este trabajo presenta los resultados de los análisis realizados en muestras de obsidíanas provenientes de tres colecciones arqueológicas proporcionadas por el Museo de Arqueología y Antropología de la Universidad Nacional Mayor de San Marcos (Co
Externí odkaz:
https://doaj.org/article/faced98086344768963195a0a761c1c4
Autor:
J. Medina Medina, P. Paucar Cabrera, V. A. Peña Rodríguez, Edson C. Passamani, J. Quispe-Marcatoma, J. Rojas Tapia, E. M. Baggio-Saitovitch, Carlos V. Landauro, C. Rojas-Ayala
Publikováno v:
Hyperfine Interactions. 242
Nanostructured (Fe0.5Ni0.5)92Zr5B3 alloy was prepared by milling a blend of pre-alloyed Fe50Ni50 precursor and high purity chemical elemental powders of Zr and B in a high-energy ball mill setup. Rietveld refinement of the X-ray diffraction pattern o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::622499517cc0ac16985604d3507052da
https://doi.org/10.1007/s10751-021-01758-y
https://doi.org/10.1007/s10751-021-01758-y
Autor:
P. Paucar Cabrera, J. Rojas Tapia, E. M. Baggio-Saitovitch, V. A. Peña Rodríguez, Edson C. Passamani, C. Rojas-Ayala, Carlos V. Landauro, J. Quispe-Marcatoma, J. Medina Medina
Publikováno v:
Materials Characterization. 149:249-254
Fe50Ni50 alloy powder was prepared by milling the 1:1 stoichiometric mixture of Fe and Ni high purity elements using high energy vibrational ball-mill. Final powdered material was obtained directly after 30 h of milling process and the Rietveld analy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9a67bbbb25ff4b3ad89ae6b6d33915f
https://doi.org/10.1016/j.matchar.2019.01.036
https://doi.org/10.1016/j.matchar.2019.01.036
Autor:
V. A. Peña Rodríguez, M. Z. Pinto, M. Pillaca, C. Rojas-Ayala, E. M. Baggio-Saitovitch, J. Quispe-Marcatoma, Carlos V. Landauro
Publikováno v:
Hyperfine Interactions. 224:83-88
Crystalline ω-Al7Cu2Fe bulk samples were prepared by arc furnace and then by means of milling, the average grain size of these samples is reduced to the nanometer scale. The structural and magnetic properties of the nanostructured ω-Al7Cu2Fe phase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ffd8f760a721ee1395261690aa7ee00
https://doi.org/10.1007/s10751-013-0868-8
https://doi.org/10.1007/s10751-013-0868-8
Autor:
C. Rojas-Ayala, Carlos V. Landauro, E. M. Baggio-Saitovitch, V. A. Peña Rodríguez, M. Taquire, M.A. de Sousa, J. Quispe-Marcatoma, Fernando Pelegrini
Publikováno v:
Hyperfine Interactions. 203:1-8
The Al46Cu23Fe13 quasicrystal phase, prepared by arc-melting and nanostructured using high energy ball milling technique, was studied employing X-ray diffraction, transmission electron microscopy, ferromagnetic resonance and electric transport measur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d71a5adbe69a56ff7a74e6b0fca8283
https://doi.org/10.1007/s10751-011-0363-z
https://doi.org/10.1007/s10751-011-0363-z
Autor:
J. Quispe Marcatoma, E. M. Baggio-Saitovitch, V. A. Peña Rodríguez, Ch. Rojas Ayala, J. Medina Medina, Edson C. Passamani, Carlos V. Landauro
Publikováno v:
Hyperfine Interactions. 202:145-151
Nanocrystalline Fe/Zr alloys have been prepared after milling for 9 h the mixture of elemental Fe and Zr powders or the arc-melting produced Fe2Zr alloy by using mechanical alloying and mechanical milling techniques, respectively. X-ray and Mossbauer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfbbaa557fb4fd649f19865085260aaa
https://doi.org/10.1007/s10751-011-0343-3
https://doi.org/10.1007/s10751-011-0343-3
Formation of nanostructured Al 64 Cu 23 Fe 13 icosahedral quasicrystal by the ball milling technique
Autor:
M. Taquire, J. Quispe Marcatoma, Ch. Rojas Ayala, V. A. Peña Rodríguez, M. Yaro, Carlos V. Landauro
Publikováno v:
Hyperfine Interactions. 195:105-109
Nanocrystalline Al64Cu23Fe13 icosahedral quasicrystal has been obtained by milling of solid quasicrystal precursors prepared by arc-melt. The local structure around Fe atoms was studied by Mossbauer spectroscopy using a quadrupole splitting distribut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e7b2b9e773d786823ae1c81b07a8982
https://doi.org/10.1007/s10751-009-0131-5
https://doi.org/10.1007/s10751-009-0131-5
Autor:
Ch. Rojas Ayala, V. A. Peña Rodríguez, J. Quispe Marcatoma, E. M. Baggio-Saitovitch, Edson C. Passamani
Publikováno v:
Journal of Alloys and Compounds. 475:29-34
During the milling process, local environments of Fe and Co in mechanically alloyed (Fe0.5Co0.5)75Si15B10 powders were systematically investigated using extended X-ray absorption fine structure (EXAFS) and 57Fe Mossbauer spectroscopy. While no substa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cf9314f67c82bbae2254e17674bc04a
https://doi.org/10.1016/j.jallcom.2008.07.104
https://doi.org/10.1016/j.jallcom.2008.07.104
Autor:
V. A. Peña Rodríguez, J. Quispe Marcatoma, J.M. Agüero Andrade, Edson C. Passamani, A. Caytueros Villegas, E. M. Baggio-Saitovitch
Publikováno v:
Materials Science and Engineering: A. 429:261-265
57 Fe Mossbauer spectroscopy and X-ray diffraction were used to study the influence of container internal geometry (flat-endings or round-endings) on the mechanical alloying process of the Fe 75 Si 15 B 10 system. The Mossbauer spectrum for the sampl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5133497015c7318f935814026fd21a3e
https://doi.org/10.1016/j.msea.2006.05.067
https://doi.org/10.1016/j.msea.2006.05.067
Publikováno v:
Journal of Alloys and Compounds. 379:23-27
High-temperature in situ 57 Fe Mossbauer spectroscopy was used to investigate the nanocrystallization process in Fe 73.5 Si 13.5 B 9 Cu 1 Nb 1 X 2 (X=Zr, Nb, Mo and V) amorphous alloys. The Mossbauer spectra were taken at temperatures where only the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::331e3149a60abfa9b299d90ee5121b51
https://doi.org/10.1016/j.jallcom.2004.02.023
https://doi.org/10.1016/j.jallcom.2004.02.023