Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Vlastimil Vrba"'
Publikováno v:
Acta Chimica Slovenica, Vol 67, Iss 2, Pp 522-529 (2020)
This study focuses on cobalt and iron ordering within a ferrite structure CoxFe3-xO4, formed during a solid-state reaction of α-Fe2O3 and CoCl2. A unique combination of transmission and emission Mössbauer spectroscopy was employed to inspect select
Externí odkaz:
https://doaj.org/article/fd56a3eb22f24afd97ed2496bc624dcf
Publikováno v:
Nanomaterials, Vol 12, Iss 17, p 2987 (2022)
Two series of ZnFe2O4 mixed cubic spinel nanoparticles were prepared by a coprecipitation method, where a solution of Fe3+ and Zn2+ was alkalised by a solution of NaOH. While the first series was prepared by a careful mixing of the two solutions, the
Externí odkaz:
https://doaj.org/article/12b0d17be34c4156afb8ccbdf68d0a69
Autor:
Jiří Pechoušek, Ernö Kuzmann, René Vondrášek, Anna Olina, Vlastimil Vrba, Lukáš Kouřil, Tomáš Ingr, Petr Král, Miroslav Mashlan
Publikováno v:
Metals, Vol 12, Iss 1, p 119 (2022)
Low-alloy 42CrMo4 steels were studied by 57Fe Mössbauer spectroscopy (MS), X-ray diffractometry (XRD), and Energy Dispersive X-ray Spectroscopy (EDS) measurements. The investigations were performed on metallographic samples, which were subjected to
Externí odkaz:
https://doaj.org/article/6ee550fa1725496ca34c1e64e97d8a27
Publikováno v:
Nanomaterials, Vol 9, Iss 4, p 544 (2019)
Application of the so-called nuclear forward scattering (NFS) of synchrotron radiation is presented for the study of crystallization of metallic glasses. In this process, nanocrystalline alloys are formed. Using NFS, the transformation process can be
Externí odkaz:
https://doaj.org/article/1b2ec031e1634cddbf4c26362e20269a
Publikováno v:
Chemical Papers.
The Lamb–Mössbauer factor is a crucial material parameter for the proper quantitative analysis of Mössbauer experiments. We report on a method for determining the Lamb–Mössbauer factor of powdered samples. It utilizes a resonant Mössbauer spe
Publikováno v:
European Journal of Inorganic Chemistry. 2021:3886-3895
Publikováno v:
Nanomaterials; Volume 12; Issue 17; Pages: 2987
Two series of ZnFe2O4 mixed cubic spinel nanoparticles were prepared by a coprecipitation method, where a solution of Fe3+ and Zn2+ was alkalised by a solution of NaOH. While the first series was prepared by a careful mixing of the two solutions, the
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 483:55-62
An autotuning procedure for driving energy modulation in Mossbauer spectroscopy is described in details. This procedure is applicable for those velocity modulation units which provide a signal proportional to the velocity, e.g. double speaker linear
Autor:
Aleš Stejskal, Vít Procházka, Michal Dudka, Vlastimil Vrba, Jan Kočiščák, Pavla Šretrová, Petr Novák
Publikováno v:
SSRN Electronic Journal.
Publikováno v:
Acta Chimica Slovenica, Vol 67, Iss 2, Pp 522-529 (2020)
This study focuses on cobalt and iron ordering within a ferrite structure Co x Fe 3-x O 4, formed during a solid-state reaction of α-Fe 2 O 3 and CoCl 2 . A unique combination of transmission and emission Mossbauer spectroscopy was employed to inspe