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^{119}Sn Hyperfine Fields in RMn_{6}Sn_{6} (R = Mg, Zr, Hf). Experimental and Theoretical Study

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Mazet T., Toboła J., Venturini G., Malaman B.

Acta Physica Polonica A

2000

vol. 97

issue 5

737-740

We performed both ^{119}Sn Möossbauer experiments and electronic structure calculations using the Korringa-Kohn-Rostoker method on the hexagonal RMn_{6}Sn_{6} (R = Mg, Zr, and Hf) compounds. According to previous neutron diffraction results two types of commensurate magnetic order are investigated: ferromagnetic for R = Mg and antiferromagnetic for R = Zr and Hf. From ^{119}Sn Möossbauer measurements, high transferred hyperfine fields on the tin nuclei are observed. The H_{hf} values are well supported by the Korringa-Kohn- Rostoker results. Moreover, the calculated μ_{Mn} are in good agreement with the neutron diffraction data. When observing the density of states, ZrMn_{6}Sn_{6} is found near semimetallic limit.

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1 Acta Physica Polonica A

1 2000

1 Malaman B.

1 Mazet T.

1 Toboła J.

1 Venturini G.

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^{119}Sn Hyperfine Fields in RMn_{6}Sn_{6} (R = Mg, Zr, Hf). Experimental and Theoretical Study