Magnetic and Transport Properties of (Fe_{1-x}Ni_{x})_{2}P in View of KKR-CPA Results

• Authors: S. Kaprzyk , S. Nizioł , J. Toboła , R. Zach , M. Bacmann , D. Fruchart , P. Wolfers
• Languages of publication: EN

Abstracts

EN

We present results of the electronic structure study for the solid solution (Fe_{1-x}Ni_{x})_{2}P (space group P6̅2m). The samples were synthesized for x=0.0 up to 0.15. From the electrical conductivity measurements on these materials, it was verified that resistivity increases with increasing temperature up to the Curie point T_{C} and changes the slope at T_{C} decreasing when temperature is raised above T_{C}. To get insight into the possible origin of such observations, we carried out the Korringa-Kohn-Rostoker-coherent potential approximation electronic structure calculations for (Fe_{1-x}Ni_{x})_{2}P in the range of concentration x=0.0 up to 1.0. It was found that alloying with Ni in Fe_{2} P causes vanishing of spin band splitting and non-rigid band behaving of electronic valence states near the Fermi level. The polarization factor for electrons at E_{F} changes in (Fe_{1-x}Ni_{x})_{2}P with increasing x, and interestingly, it reaches maximum at x=0.1, closely to the concentration (x=0.08), when the largest value of T_{C} and a kink in temperature dependent resistivity were detected.

Keywords

EN

71.20.-b; 71.20.Lp; 75.50.Cc

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1997
• Volume: 91
• Issue: 2
• Pages: 475-478

Dates

published

1997-02

Contributors

author

S. Kaprzyk

• Faculty of Physics and Nuclear Techniques AGH, Al. Mickiewicza 30, 30-059 Kraków, Poland

author

S. Nizioł

• Faculty of Physics and Nuclear Techniques AGH, Al. Mickiewicza 30, 30-059 Kraków, Poland

author

J. Toboła

• Faculty of Physics and Nuclear Techniques AGH, Al. Mickiewicza 30, 30-059 Kraków, Poland

author

R. Zach

• Institute of Physics, Technical University of Kraków, Podchorążych 1, 30-084 Kraków, Poland

author

M. Bacmann

• Laboratoire de Cristallographie CNRS, BP-166X Grenoble Cedex 9, France

author

D. Fruchart

• Laboratoire de Cristallographie CNRS, BP-166X Grenoble Cedex 9, France

author

P. Wolfers

• Laboratoire de Cristallographie CNRS, BP-166X Grenoble Cedex 9, France