79Br and 127I nuclear quadrupole resonances(NQR) were observed in α-Ga2Br4, β-Ga2Br4, and Ga2I4 at various temperatures. Resonance lines disappeared at 353, 335, and 448 K for α-, β-Ga2Br4, and Ga2I4 respectively. The wide separation of the 127I resonance lines in Ga2I4 may be attributed to the interaction between the Ga+ ions and the I atoms.
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