Practical aspects of Mössbauer spectroscopy instrumentation

Gancedo, J. R.; Gracia, M.; Marco, José F.

doi:10.1007/bf02074260

Cited by 8 publications

(2 citation statements)

References 11 publications

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“…[11] Target spectra were measured in the transmission mode in a helium closedcycle cryorefrigerator. [12] The spectra were computer-fitted and theisomer shift data are quoted relative to metallic iron at room temperature.…”

Section: Methodsmentioning

confidence: 99%

Mössbauer and Magnetic Properties of Coherently Mixed Magnetite-Cobalt Ferrite Grown by Infrared Pulsed-Laser Deposition

Figuera¹,

Quesada²,

Martín-García³

et al. 2015

Croat. Chem. Acta

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Abstract:We have studied the magnetic properties and the composition of cobalt ferrite single crystal films on SrTiO3 : Nb grown by infrared pulsed-laser deposition. Mössbauer spectra have been recorded from both the target used to grow the films and the films themselves. The Mössbauer spectra of the target taken at low temperatures show a strong dependence of the recoil free fraction of the octahedral sites with temperature. The films composition, with a coexistence of Co-enriched cobalt ferrite and magnetite, has been estimated assuming a similar ratio of the recoil free fractions of the films. X-ray absorption and x-ray magnetic circular dichroism measurements confirm the valence composition of the film and show ferromagnetic Fe-Co coupling in the films with a coercive field around 0.5 T at room temperature. The combination of these characterization techniques allows establishing the coherent structural and magnetic properties of this biphase system.

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Section: Methodsmentioning

confidence: 99%

Mössbauer and Magnetic Properties of Coherently Mixed Magnetite-Cobalt Ferrite Grown by Infrared Pulsed-Laser Deposition

Figuera¹,

Quesada²,

Martín-García³

et al. 2015

Croat. Chem. Acta

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“…Mössbauer spectra were recorded in the integral low-energy electron mode (ILEEMS) at 298 K for the platelets and the transmission mode, both for the commercial sample and for the platelets, at 298 K and 26 K using a constant acceleration spectrometer, a 57 Co(Rh) source, a helium closed cycle cryorefrigerator and a triangular drive waveform 57 . The spectra were computer-fitted and the isomer shift data are quoted relative to the centroid of the spectrum of metallic iron at room temperature.…”

Section: Methodsmentioning

confidence: 99%

Strontium hexaferrite platelets: a comprehensive soft X-ray absorption and Mössbauer spectroscopy study

Soria

Jenuš

Marco

et al. 2019

Sci Rep

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Platelets of strontium hexaferrite (SrFe 12 O 19 , SFO), up to several micrometers in width, and tens of nanometers thick have been synthesized by a hydrothermal method. They have been studied by a combination of structural and magnetic techniques, with emphasis on Mössbauer spectroscopy and X-ray absorption based-measurements including spectroscopy and microscopy on the iron-L edges and the oxygen-K edge, allowing us to establish the differences and similarities between our synthesized nanostructures and commercial powders. The Mössbauer spectra reveal a greater contribution of iron tetrahedral sites in platelets in comparison to pure bulk material. For reference, high-resolution absorption and dichroic spectra have also been measured both from the platelets and from pure bulk material. The O-K edge has been reproduced by density functional theory calculations. Out-of-plane domains were observed with 180° domain walls less than 20 nm width, in good agreement with micromagnetic simulations.

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