Structural and Magnetic Ordering in Fe-Ga Thin Films Examined by Mössbauer Spectrometry

Szumiata, T.; Brzózka, K.; Gawroński, M.; Górka, B.; Javed, Anam; Morley, N. A.; Gibbs, M.R.J.

doi:10.12693/aphyspola.119.21

Cited by 5 publications

(5 citation statements)

References 11 publications

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“…The fi tting procedure of the spectra was performed with PolMoss package based on MS Excel Solver extension. This software was successfully applied in case of high-magnetostrictive Fe-Ga thin fi lms [19]. Each fi tted subspectrum was approximated by the Gaussian distributions of hyperfi ne parameters (in both doublets and Zeeman sextets) convoluted with Lorentzian base lines (Voigt-type profile).…”

Section: Methodsmentioning

confidence: 99%

Metallurgical quality evaluation of the wind turbine main shaft 42CrMo4 steel: microscopic and Mössbauer studies

et al. 2017

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In this paper, the results of the complex examination of the 42CrMo4 steel samples are presented. The samples were taken from the metallurgical forging prepared for the production of the wind turbine main shaft. The samples underwent Mössbauer spectroscopic analysis, as well as the measurement of its mechanical characteristics such as hardness and strength are analysed. Conversion electron Mössbauer spectrometry confirmed phase purity and isotropy of the investigated 42CrMo4 steel. The method provided accurate results, proving Mössbauer spectrometry to be an effective tool for the wind turbine main shaft analysis.

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Section: Methodsmentioning

confidence: 99%

Metallurgical quality evaluation of the wind turbine main shaft 42CrMo4 steel: microscopic and Mössbauer studies

et al. 2017

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“…The spectra have been fitted with PolMoss package (for MS Excel with Solver extension) which was successfully applied e.g. in the case of Fe-Ga thin films [10]. The fitted subspectra were represented by the Voigt-type profile as a convolution of Lorentzian base lines with Gaussian distributions of hyperfine parameters both in doublets and the Zeeman sextets.…”

Section: Methodsmentioning

confidence: 99%

Magnetism and Structure Evolution in Ni-Zn Ferrites Thin Films - CEMS Study

et al. 2017

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In this work, a 57 Fe conversion electron Mössbauer spectrometry and X-ray diffraction have been utilized in order to investigate the structural and magnetic order in 500 nm thick Ni-Zn ferrite films deposited on Si(100) substrate by laser ablation. Considering the contributions of the conversion electron Mössbauer subspectra corresponding to the tetrahedral (A) and octahedral (B) sites, the spinel inversion parameter in A [Ni1−xFe1+x] B O4 films has been estimated. The hyperfine field (B hf ) values in the investigated Ni-Zn ferrites thin films are about 5-8% smaller than those of bulk ferrites, which could be a sign of thermal magnetic relaxations due to the size effects. The distribution of hyperfine magnetic field directions was found to be affected by perpendicular anisotropy.

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“…The effectiveness of PolMoss module has been already confirmed e.g. in the analysis of the CEMS spectra of highmagnetostrictive Fe-Ga thin films (Szumiata et al 2011). According to CEMS detector chamber dimensions, the samples had to be prepared as discs 2 mm thick and 15 mm in diameter.…”

Section: Chemical and Structural Analysismentioning

confidence: 99%

Application of the microscopic and Mössbauer studies to the analysis of a marine diesel engine crankshaft

Siemiątkowski

Szumiata

Gzik-Szumiata

et al. 2018

Journal of Marine Engineering & Technology

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In the paper, the issue of the material quality of the large-size crankshaft is discussed. In order to ensure the reliability and wear resistance of the crankshaft, its chemical composition was checked in detail, revealing also the presence of trace elements omitted in Standards. The mechanical characteristics of the material were measured using the samples taken from the upper and lower parts of the forging. The novelty of the quality analysis was the additional measurement with the conversion electron Mössbauer spectrometry method. High phase purity, homogeneity and isotropy of the investigated material were confirmed. The carbon-saturated ferrite was detected as dominating phase of about 95% content. The observed martensite structure appeared to be correct, and the material met the specification requirement. Only slight differences in atomic ordering of alloying elements in ferrite structure were observed between the upper and lower part region, which was not considered a threat. It was assumed that the confirmed chemical purity and homogeneity contributed to the high straightness of the tested material.

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Structural and Magnetic Ordering in Fe-Ga Thin Films Examined by Mössbauer Spectrometry

Cited by 5 publications

References 11 publications

Metallurgical quality evaluation of the wind turbine main shaft 42CrMo4 steel: microscopic and Mössbauer studies

Metallurgical quality evaluation of the wind turbine main shaft 42CrMo4 steel: microscopic and Mössbauer studies

Magnetism and Structure Evolution in Ni-Zn Ferrites Thin Films - CEMS Study

Application of the microscopic and Mössbauer studies to the analysis of a marine diesel engine crankshaft

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