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Piezoelectric and Dielectric Properties of LiNbO3, PMN-PT, and PZT-5A Materials at Cryogenic Temperatures
DownloadFall 2018
The piezoelectric coecients dij , dielectric constant K ij , dielectric loss, creep and hysteresis were measured for 41 X-cut lithium niobate (LiNbO3), single crystal lead magnesium niobate-lead titanate (PMN-PT) and ceramic lead zirconium titanate (PZT-5A) transducers. The measurements were...
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Spring 2011
The Kim and Chan experiment in 2004 gave the first experimental evidence of a possible supersolid state. Even though the origin of this state is not clear yet, several experimental and theoretical investigations suggest defects are responsible for this curious phase. We have used heat pulses and...
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Spring 2011
Torsional oscillator experiments on solid 4He show supersolid behavior which appears to be associated with disorder. However, confining helium in the pores of an aerogel does not enhance the supersolid decoupling, even though x-ray measurements confirm that the crystals are highly disordered. ...