Zobrazeno 1 - 10
of 14
pro vyhledávání: '"K. F. Ulbrich"'
Autor:
K. F. Ulbrich, C. E. M. Campos
Publikováno v:
AIP Advances, Vol 9, Iss 4, Pp 045311-045311-6 (2019)
We have recently reported a method for obtaining about 30% of tetragonal β-FeSe in coexistence with hexagonal δ-FeSe and α-Fe phases by ball milling under an inert atmosphere, starting from FexSe powders with x = 1.00, 1.25 or 1.50, in which the u
Externí odkaz:
https://doaj.org/article/6eb7f1ff8ffa493dbd0a9d3169df0350
Publikováno v:
Green Chemistry. 23:4580-4593
In this work, hydrated nickel sulfates (NSHs) were spontaneously obtained by storing nanocrystalline nickel sulfide composites (NiS2–NiS) under ambient conditions over several months. The samples containing different proportions of NiS2–NiS nanop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c760fabc090e59420366ee2fa5955c41
https://doi.org/10.1039/d1gc01213d
https://doi.org/10.1039/d1gc01213d
Autor:
Carlos Eduardo Maduro de Campos, Julian Penkov Geshev, K. F. Ulbrich, V. Z. C. Paes, Marcelo Augusto Malagutti
Publikováno v:
Repositório Institucional da UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
This work reports an unprecedented mechanochemistry synthesis of β-CoTe and its systematic characterization through X-ray powder diffraction (XRPD), transmission electron microscopy (TEM), and magnetometry techniques. The mechanical alloying produce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb6bf52d1ab10ad78375f51dbb40bc20
Publikováno v:
Repositório Institucional da UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
We present a systematic structural, microstructural and magnetic characterization of the hexagonal δ-FeSe nanophase produced by a simple one-step mechanochemical synthesis route, by using conventional X-ray powder diffraction (XRPD), Rietveld refine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbec5e71baa90b4e8efbdf4bf601e604
Publikováno v:
Journal of Materials Science. 53:13442-13450
Ni25Te75 nanocrystalline alloy containing trigonal NiTe2 and Te nanocrystals was prepared through mechanochemical processing of pure elemental tellurium and nickel powders in argon atmosphere. The Ni25Te75 samples processed from 3 h to 30 h milling t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad8d177d88b805396b01ef9b97fa5d4a
https://doi.org/10.1007/s10853-018-2470-6
https://doi.org/10.1007/s10853-018-2470-6
Publikováno v:
RSC Advances. 8:8190-8198
Nanocrystalline tetragonal β-FeSe phase was prepared mechanochemically using ball milling procedures in an inert atmosphere, starting from FexSe powder mixtures with x = 1.00, 1.25 and 1.50, with x = 1.25 and 1.50 leading to more than 93% of pure ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d66b37eb00a66f4aee9b76ac3ee309f2
https://doi.org/10.1039/c7ra13473h
https://doi.org/10.1039/c7ra13473h
Publikováno v:
Cleaner Engineering and Technology, Vol 5, Iss, Pp 100327-(2021)
In this work, the mill scale (MS) of hot rolling, a waste of steel processing, composed by a complex mixture of iron oxides, is transformed in a nanocrystalline powder containing only the hematite (α-Fe2O3) phase. For that, the MS was dry-milled usi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b41b7d4cc185937eefdf9b57d31a8d7
https://doi.org/10.1016/j.clet.2021.100327
https://doi.org/10.1016/j.clet.2021.100327
Autor:
A. Guagliardi, Federica Bertolotti, K. F. Ulbrich, Norberto Masciocchi, Matteo Leoni, Carlos Eduardo Maduro de Campos
Advanced courses in Applied Crystallography for Nanosciences are not often delivered in Academia and, consequently, require the organization of events specifically tailored to PhD students, postdocs, and young researchers at the very beginning of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d14b31eaf57003296c7fdba4a05800dc
http://hdl.handle.net/11383/2083582
http://hdl.handle.net/11383/2083582
Publikováno v:
Materials Today Communications. 25:101251
Nanocrystalline nickel ditelluride, NiTe2, has been prepared mechanochemically using ball milling in an inert atmosphere at room temperature, starting from Ni34Te66 powder mixtures. Structural and microstructural characterization of the Ni34Te66 allo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4fdb3975c0d022bd517520ad733819b3
https://doi.org/10.1016/j.mtcomm.2020.101251
https://doi.org/10.1016/j.mtcomm.2020.101251
Publikováno v:
Materials Chemistry and Physics. 252:123226
Nanocrystalline nickel disulfide, NiS2, was mechanochemically prepared using ball milling procedures in inert atmosphere, starting from 34:66 Ni:S powder mixtures. X-ray powder diffraction (XRPD) patterns showed that 6 h of milling are enough to allo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8984054ffac41f53a1f82c0e171db857
https://doi.org/10.1016/j.matchemphys.2020.123226
https://doi.org/10.1016/j.matchemphys.2020.123226