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- W1969121132 endingPage "9549" @default.
- W1969121132 startingPage "9544" @default.
- W1969121132 abstract "We report on magnetic measurements and electronic structure investigations of the alloyed compounds Zr-Ni-Sn and Ti-Ni-Sn. Both belong to the group of semi-Heusler alloys, and are classified as narrow-gap semiconductors with indirect gaps near 500 meV. Tetravalent ions (Zr,Ti) are partly replaced by Ce, with a Ce concentration less than 20%. Susceptibility measurements indicate the magnetic ground state of Ce in both Zr-Ni-Sn and Ti-Ni-Sn, and the effective moment is near the trivalent value at $T=300mathrm{K}.$ The Ce ${4f}^{1}$ configuration is well accepted by Ce $3d$ x-ray photoemission spectra. We compare the x-ray photoemission spectroscopy valence-band spectra for investigated Ce alloys. A very good agreement between the experiments and calculations is obtained. We classify Zr-Ni-Sn and Ti-Ni-Sn as alloys with a strong hybridization influence on the gap formation. The destructive alloying affecting the gap stability seems to have the same origin as in the case of Ce Kondo insulators." @default.
- W1969121132 created "2016-06-24" @default.
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- W1969121132 date "1998-04-15" @default.
- W1969121132 modified "2023-10-18" @default.
- W1969121132 title "Suppression of the gap energy in Zr-Ni-Sn and Ti-Ni-Sn by partial substitution of Zr and Ti by Ce" @default.
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- W1969121132 doi "https://doi.org/10.1103/physrevb.57.9544" @default.
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