A computer programme for the evaluation of M�ssbauer data

Ruebenbauer, K.; Birchall, T.

doi:10.1007/bf01021499

Cited by 178 publications

(56 citation statements)

References 14 publications

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“…The quantity of iron in each absorber (always < 10 mg Fe/cm2) was calculated according to the method described by Long et al (12) y-ray scattering by tungsten. The spectra were fitted using a modified version of the program developed by Ruebenbauer and Birchall (13) and all isomer shifts are relative to a-Fe as zero shift.…”

Section: Moessbauer Spectroscopymentioning

confidence: 99%

A study of iron–tungsten oxides and iron–chromium–tungsten oxides

Birchall¹,

Hallett²,

Vaillancourt³

et al. 1988

Can. J. Chem.

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A 57Fe Moessbauer study of the Fe2O3–WO3 and Fe2O3–Cr2O3–WO3 systems has been carried out. Single phase materials could be prepared having the composition Fe2−xWO6−3x/2 (x = 0.28), the stoichiometric Fe2WO6 always contained detectable amounts of α-Fe2O3. The iron tungstates are found to be unstable to prolonged heating at 1000 °C. The Cr2−yFeyWO6 (0 < y ≤ 2) system was shown to be of the trirutile type when y ≤ 1.7 but multiphasic when y ≥ 1.7, these latter phases have structures based upon the iron and chromium tungstate phases, respectively. The Moessbauer parameters for the Cr2−xFeyWO6 compositions do not appear to behave in the same fashion as the related Fe2−xCrxTeO6 system.

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Section: Moessbauer Spectroscopymentioning

confidence: 99%

A study of iron–tungsten oxides and iron–chromium–tungsten oxides

Birchall¹,

Hallett²,

Vaillancourt³

et al. 1988

Can. J. Chem.

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“…The Mössbauer spectra are analysed by considering single symmetric Lorentzian-shaped sextet model for parent (doped) haematites. The room-temperature Mössbauer spectra are fitted with NORMOS-SITE program [30] and all samples show strong magnetic ordering. The obtained value of chi-2 ( 2 ) is minimum and NORMOS-SITE program is well fitted to the experimental data.…”

Section: Resultsmentioning

confidence: 99%

“…Absorbers were carefully prepared to optimize both a good compactness and an adequate heat transmission. Analysis of the spectra was performed using the NORMOS [30] least-squares fitting program. Doublets and sextets of Lorentzian lines were used, doublets in the paramagnetic region and sextets in the magnetic region.…”

Section: Mössbauer Spectroscopymentioning

confidence: 99%

Magnetic and structural properties of pure and Cr-doped haematite: α-Fe2−xCr x O3 (0 ≤ x ≤ 1)

Yogi

Varshney

2013

J Adv Ceram

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“…The MsAa-4 spectrometer would be compatible with the MOSGRAF data processing system [14]. The MOSGRAF system has already program GMFPCOM capable to fit up to 128 spectra simultaneously with 2047 channels per spectrum.…”

Section: Other Modificationsmentioning

confidence: 99%

Early Design Stage of the MsAa-4 Mössbauer Spectrometer

et al. 2008

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Entirely new Mössbauer spectrometer MsAa-4 is currently under design and construction. New features as compared to the basic features of the previous generation MsAa-3 spectrometer could be summarized as follows. Completely digital processing of the γ-ray detector signal beyond the Gaussian shape filter/amplifier is to be implemented. The spectrometer is going to be able to accommodate external multiple detector heads. One could collect simultaneously up to 128 γ-ray spectra in 16384 channels of 32-bit each and up to 512 Mössbauer spectra in 4096 channels of 32-bit each provided the proper external multiple detector head is used. The count-rate per single detector is limited to about 10 5 counts per second total. Improved precision of the reference function from 12-bit to 16-bit is to be provided. The reference function is stored in 8192 channels per complete cycle. Addition of the random noise to the reference corner prism of the Michelson-Morley calibration inteferometer is to be introduced to avoid spurious fringes due to the phase lock-up. Integrated universal temperature controller being able to use variety of the temperature sensors is to be interconnected with the proper spectrometer. The spectrometer is now a stand-alone network device as it is equipped with the Ethernet connection to the outside world. Modular design and use of the strict standards allows easy reconfiguration for other applications than the Mössbauer spectroscopy.

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A computer programme for the evaluation of M�ssbauer data

Cited by 178 publications

References 14 publications

A study of iron–tungsten oxides and iron–chromium–tungsten oxides

A study of iron–tungsten oxides and iron–chromium–tungsten oxides

Magnetic and structural properties of pure and Cr-doped haematite: α-Fe2−xCr x O3 (0 ≤ x ≤ 1)

Early Design Stage of the MsAa-4 Mössbauer Spectrometer

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