Evidence for a New Phase of Solid He3
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Measurements of the melting pressure of a sample of He3 containing less than 40-ppm He4 impurities, self-cooled to below 2 mK in a Pomeranchuk compression cell, indicate the existence of a new phase in solid He3 below 2.7 mK of a fundamentally different nature than the anticipated antiferromagnetically ordered state. At lower temperatures, evidence of possibly a further transition is observed. We discuss these pressure measurements and supporting temperature measurements. 1972 The American Physical Society.