Peculiarities of crystal structure and superfine interactions in alloys Ti-Co-Sn
Alloys with the general formula TiCo2-хSn were produced by way of sintering primary components – pure metals in an argon atmosphere. The alloys were homogenized by annealing in the evacuated quartz vessel at T=1070 K during 500 h. X-ray diffraction analysis confirmed single-phase condition of all samples. Nuclear gamma resonance (NGR) analysis was made at T=295 and 80 K using radiation source BaSn119Sn. It was established, that Sn atoms in samples with x=0.6 and 1.0 are in two crystallographic positions, pyramids (1) and tetrahedrons (2) to which isomer shifts correspond (relative to SnO2 1.52-1.65 mm/s for Sn(1) and 2.99 mm/s for Sn(2). Zeeman splitting for Sn(1) in TiCo2Sn takes place at T=295 and 80 K, and for compositions with x=0.3-1.0 at T=80 K only. For Sn(2) it is noted only in alloy TiCoSn at T=80 K. The conclusion has been made on the reason of formation of effective magnetic fields on non-magnetic tin atoms nuclei.
K. Endo, A. Shinogi, I. Vincze, J. Phyz. Soc. 40, 674(1976) (https://doi.org/10.1103/PhysRevB.3.1637).
Andrey Kosinsky, Ole Bjor Karsen, Magnus H. Sorby. Metallurgical and materials transactions E 3(4), 329(2016) (https://doi.org/10.1007/s40553-016-0098-5).
R. V. Skolozdra, Yu. V. Stadnyk, Yu. K. Horelenko, Ye. T. Terletskaya. Solid state physics 32, 2650 (1990).
S. A. Yuryev, S. I. Yushchuk, R. V. Skolozdra, A. M. Horyn, Magnetic Materials, and Application Conference EMMA’93 (KOSICE, 1993), p. 225.
E. Uhl. Journ. Magnet and Magnetic Mater. 25(2), 221 (1981) (https://doi.org/10.1016/0304-8853(81)90123-2).
S. I. Yushchuk, S. A. Yuryev, R. V. Skolozdra, Yu. V. Stadnyk, II Conference on nuclear-spectroscopic research of superfine interactions, (Grozny, 1987), p. 47.
Yu. Stadnyk, L. Romaka, A. M. Horyn, A. Tkachuk, P. Rogl. Journal of Alloys and Compounds. 387, 251 (2005) (https://doi.org/10.1016/j.jallcom.2004.06.052).
S. I. Yushchuk, S. A. Yuryev, V. A. Trukhtanov, Magnetic fields on atom in ferrites (Publishing house of National University “Lviv Polytechnic”, p. 154).
V.V. Chekin, Mössbauer spectroscopy of iron, gold and tin alloys (Publishing house Energoizdat, 1981).