Phase transformations in the Mn-Ge system and in Ge (x) Mn1-x diluted semiconductors

Тип публикации: статья из журнала

Год издания: 2012

Идентификатор DOI: 10.1134/S0021364012130097

Аннотация: Results of an X-ray diffraction study as well as magnetic and electrical measurements of the solid-state reactions in Ge/Mn polycrystalline films of an 80/20 atomic composition have been presented. It has been shown that the ferromagnetic Mn5Ge3 phase is formed first on the Ge/Mn interface after annealing at similar to 120A degrees C. The further increase in the annealing temperature to 300A degrees C leads to the beginning of the synthesis of the Mn11Ge8 phase, which becomes dominating at 400A degrees C. The existence of new structural transitions in the Mn-Ge system in the region of similar to 120 and similar to 300A degrees C has been predicted on the basis of the presented results and results obtained earlier when studying solid-state reactions in different film structures. The supposition about the general chemical mechanisms of the synthesis of the Mn5Ge3 and Mn11Ge8 phases during the solid-state reactions in the Ge/Mn films of the 80/20 atomic composition and the phase separation in Ge (x) Mn1 - x (x > 0.95) diluted semiconductors has been substantiated.

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Издание

Журнал: JETP LETTERS

Выпуск журнала: Vol. 96, Is. 1

Номера страниц: 40-43

ISSN журнала: 00213640

Место издания: NEW YORK

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER

Авторы

  • Myagkov V.G. (Siberian State Aerospace University)
  • Zhigalov V.S. (Siberian State Aerospace University)
  • Matsynin A.A. (Siberian State Aerospace University)
  • Bykova L.E. (Kirensky Institute of Physics, Siberian Branch,Russian Academy of Sciences)
  • Bondarenko G.V. (Kirensky Institute of Physics, Siberian Branch,Russian Academy of Sciences)
  • Patrin G.S. (Siberian Federal University)
  • Velikanov D.A. (Siberian Federal University)
  • Bondarenko G.N. (Institute of Chemistry and Chemical Technology, Siberian Branch,Russian Academy of Sciences)

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