Paramagnetic Resonance of Chromium in MgTi O 3
1963; American Institute of Physics; Volume: 130; Issue: 6 Linguagem: Inglês
10.1103/physrev.130.2199
ISSN1536-6065
Autores Tópico(s)Advanced Condensed Matter Physics
ResumoThe paramagnetic resonance spectrum of ${\mathrm{Cr}}^{3+}$ in single crystals of rhombohedral MgTi${\mathrm{O}}_{3}$ was measured at frequencies of 24 kMc/sec and 35 kMc/sec. The results indicate that ${\mathrm{Cr}}^{3+}$ is located at ion sites of trigonal symmetry. The spectrum can be described by an axial spin Hamiltonian with $S=\frac{3}{2}$. The parameters at room temperatures are: $|D|=(15.05\ifmmode\pm\else\textpm\fi{}0.03)$ kMc/sec, ${g}_{\mathrm{II}}=1.976\ifmmode\pm\else\textpm\fi{}0.002$, ${g}_{\ensuremath{\perp}}=1.981\ifmmode\pm\else\textpm\fi{}0.002$. Due to the relatively large zero-field splitting, the chemical stability and good mechanical properties, chromium-doped MgTi${\mathrm{O}}_{3}$ might be a useful material for solid-state masers.
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