Abstract
Using the Mößbauer-effect of57Fe the magnetic moments of iron-atoms dissolved in titanium were measured. This problem is of interest because the superconducting transition temperatureT c increases with the Fe-concentration. The superconducting high-temperature phaseβ-Ti-Fe and the other stable and metastable phases were studied up to the intermetallic compound FeTi. It was found that in not any of this phases a localized magnetic moment exists with the Fe-atoms. Therefore the theory of Gangulyet al. for the increasingT c is applicable. The only phase showing quadrupolinteraction isβ-Ti-Fe; the electric field gradient must be caused by a distortion of the cubic lattice. Two different chemical shifts are found inβ-Ti-Fe which cannot be understood by the phase diagram: one forβ-Ti-Fe withx≧ 8 at% Fe the other forx≦8 at% Fe. The former is equal to the value of FeTi, the latter to theω-phase. The difference is 0.10 mm/s.
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Herrn Prof. Dr. H. Wegener danke ich für sein förderndes Interesse am Fortgang dieser Arbeit. Herr Prof. Dr. U. Zwicker hat durch wertvolle Diskussionen dankenswerterweise sehr zur Klärung der metallkundlichen Probleme beigetragen. Der Erlanger Mößbauergruppe mit Herrn Dr. G. Ritter danke ich sehr herzlich für die angenehme Zusammenarbeit. Der Deutschen Forschungsgemeinschaft bin ich für die finanzielle Unterstützung zu Dank verpflichtet.
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Rupp, G. Mößbauereffektmessungen im titanreichen Eisen-Titan-System. Z. Physik 230, 265–277 (1970). https://doi.org/10.1007/BF01394691
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DOI: https://doi.org/10.1007/BF01394691