Portal de Periódicos da CAPES

Resonance depolarization of B 12 implanted in metallic and semiconductor hosts

1974; American Institute of Physics; Volume: 10; Issue: 2 Linguagem: Inglês

10.1103/physrevc.10.946

1538-4497

R. E. McDonald, T. K. McNab,

Magnetic properties of thin films

Resonance depolarization measurements have been made on $^{12}\mathrm{B}$ implanted in the semiconducting hosts silicon, germanium, and silicon carbide, and in the face-centered cubic metal hosts platinum, rhodium, palladium, gold, copper, aluminum, and sliver. The Knight shifts of $^{12}\mathrm{B}$ in the metallic hosts have been obtained by comparison of the resonant frequencies in silicon and metallic hosts. The measured Knight shifts $\frac{\ensuremath{\Delta}\ensuremath{\mu}}{\ensuremath{\mu}}$ are: [Pt; -10(3) \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}5}$], [Rh; 4(4) \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}5}$], [Pd; 11(4) \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}5}$], [Au; 54(3) \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}6}$], [Cu; 60(6) \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}5}$], [Al; 66(9) \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}5}$], and [Ag; 67(3) \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}5}$]. The effective $^{12}\mathrm{B}$ magnetic moment is determined to be 1.002 82(2)${\mathrm{\ensuremath{\mu}}}_{\mathit{N}}$ in Si, 1.002 91(2)${\mathrm{\ensuremath{\mu}}}_{\mathit{N}}$ in Ge, and 1.002 87(2)${\mathrm{\ensuremath{\mu}}}_{\mathit{N}}$ in SiC hosts.NUCLEAR MOMENTS $\ensuremath{\mu}(^{12}\mathrm{B})$ measured; resonance depolarization in Pt, Pd, Rh, Au, Ag, Cu, Al, Si, SiC, Ge hosts. Knight shifts measured.