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Mössbauer Study on FeSn and Fe3Sn

Иэучение зффекта мёссбаузра на FeSn и Fe3Sn

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Il Nuovo Cimento B (1965-1970)

Summary

Mössbauer-effect spectra have been obtained in the temperature region from −196° to 300 °C for both iron and tin nuclei in FeSn and Fe3Sn. It is established that FeSn is antiferromagnetic with Néel temperature=(94±3) °C. It is also found that the effective magnetic fields at the positions of iron and tin nuclei both point opposite to the magnetization in the ferromagnetic Fe3Sn. Values of effective magnetic fields and isomer shifts were calculated using simple models. The results obtained for the quadrupole interaction may be considerably changed when the magnetic and electric field structures are better known.

Riassunto

Si sono ottenuti gli spettri dell’effetto Mössbauer nell’intervallo di temperature da — 196° a 300°C sia per i nuclei di ferro che per quelli di stagno in FeSn e Fe3Sn. Si conferma che il FeSn è antiferromagnetico con una temperatura di Néel di=(94±3) °C. Si trova anche che i campi magnetici effettivi nei posti die nuclei di ferro e stagno sono diretti entrambi in senso opposto alla magnetizzazione nel Fe3Sn ferromagnetico. Con semplici modelli si sono calcolati i valori dei campi magnetici effettivi e gli spostamenti isomerici. I risultati ottenuti per l’interazione quadripolare possono cambiare considerevolmente quando saranno conosciute meglio le strutture dei campi magnetici ed elettrici.

Реэюме

Был получен спектр зффекта Мёссбаузра при температурах от − 196° до 300° С для обоих ядер желеэа и олова в FеSn и Fe3Sn. Установлено, что FeSn является антиферромагнетиком с температурой Неель=(94±3)°C. Также найдено, что зффективные магнитные поля в точках расположения обоих ядер желеэа и олова противоположны намагниченности в ферромагнетике Fe3Sn. Испольэуя простые модели вычислены зффективные магнитные поля и иэомерные сдвиги. Полученные реэультаты для квадрупольного вэаимодействия могут быть сушественно иэменены, если структура магнитного и злектрического полей иэвестны лучще.

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Djéga-Mariadassou, C., Lecocq, P., Trumpy, G. et al. Mössbauer Study on FeSn and Fe3Sn. Nuovo Cimento B (1965-1970) 46, 35–45 (1966). https://doi.org/10.1007/BF02710635

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  • DOI: https://doi.org/10.1007/BF02710635

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