  We present the performances of Li-based compounds used as scintillating
bolometer for rare decay studies such as double-beta decay and direct dark
matter investigations. The compounds are tested in a dilution refrigerator
installed in the underground laboratory of Laboratori Nazionali del Gran Sasso
(Italy). Low temperature scintillating properties are investigated by means of
different radioactive sources, and the radio-purity level for internal
contaminations are estimated for possible employment for next generation
experiments.

Instrumentation and Detectors