Dissipation in single crystal diamond micromechanical annular plate resonators

We report measurements of energy dissipation in single crystal diamond annular plate resonators for temperatures ranging from 4 to 300 K. An order of magnitude reduction in dissipation is observed as the temperature is lowered from room temperature (1/Q = 5 x 10(-4)) to 30 K (1/Q = 5 x 10(-5)). (C) 2011 Elsevier B.V. All rights reserved.