Nuclear magnetic resonance spectra of 119Sn and 125Te in SnTe and SnTe:Mn

Autor:	Yu. K. Vygranenko, E.I. Slynko, V. V. Slyn’ko, A. G. Khandozhko
Rok vydání:	1997
Předmět:	Condensed matter physics Chemistry Resonance Electron Condensed Matter Physics Atomic and Molecular Physics and Optics Spectral line Electronic Optical and Magnetic Materials Nuclear magnetic resonance Ferromagnetism Phase (matter) Hyperfine structure Superparamagnetism Phase diagram
Zdroj:	Semiconductors. 31:1021-1024
ISSN:	1090-6479 1063-7826
DOI:	10.1134/1.1187017
Popis:	A study is reported of the nuclear magnetic resonance spectra of 119Sn and 125Te in SnTe with hole concentrations p77=1.42×1020−2.3×1021 cm−3 and in SnTe:Mn (NMn=0.5 and 5 at. %, p77=8×1020 cm−3) at T=4.2–300 K. Considerable broadening of NMR lines due to hyperfine magnetic interactions between nuclear and electron spins was observed in SnTe with p77>2×20 cm−3. Asymmetric broadening of the resonance lines was observed in the rhombohedral phase of SnTe and SnTe:Mn. The temperature dependence of the NMR line width of 125Te in SnTe:Mn is in agreement with the magnetic phase diagram for NMn=5 at. %. The superparamagnetic phase of SnTe:Mn is formed at T=20±2 K and the ferromagnetic phase is formed at T=4.2 K.
Databáze:	OpenAIRE
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