caa a22 4500 445366761 CHVBK 20180317142932.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10909-011-0351-3 doi (NATIONALLICENCE)springer-10.1007/s10909-011-0351-3 On the Mobile Behavior of Solid 4He at High Temperatures [Elektronische Daten] [A. Eyal, E. Polturak] We report studies of solid helium contained inside a torsional oscillator, at temperatures between 1.07K and 1.87K. We grew single crystals inside the oscillator using commercially pure 4He and 3He-4He mixtures containing 100 ppm 3He. Crystals were grown at constant temperature and pressure on the melting curve. At the end of the growth, the crystals were disordered, following which they partially decoupled from the oscillator. The fraction of the decoupled He mass was temperature and velocity dependent. Around 1K, the decoupled mass fraction for crystals grown from the mixture reached a limiting value of around 35%. In the case of crystals grown using commercially pure 4He at temperatures below 1.3K, this fraction was much smaller. This difference could possibly be associated with the roughening transition at the solid-liquid interface. Springer Science+Business Media, LLC, 2011 Solid helium nationallicence Supersolids nationallicence Disorder nationallicence Eyal A. Department of Physics, Technion, 32000, Haifa, Israel aut Polturak E. Department of Physics, Technion, 32000, Haifa, Israel aut Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 163/5-6(2011-06-01), 262-274 0022-2291 163:5-6<262 2011 163 10909 https://doi.org/10.1007/s10909-011-0351-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10909-011-0351-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Eyal A. Department of Physics, Technion, 32000, Haifa, Israel aut NATIONALLICENCE 700 1- Polturak E. Department of Physics, Technion, 32000, Haifa, Israel aut NATIONALLICENCE 773 0- Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 163/5-6(2011-06-01), 262-274 0022-2291 163:5-6<262 2011 163 10909 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer