Pressure measurement during nuclear demagnetization of BCC and HCP solid3He |
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| Authors: | T. Lang P. L. Moyland D. A. Sergatskov J. Xu E. D. Adams Y. Takano |
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| Affiliation: | (1) Department of Physics and Center for Ultralow Temperature Research, University of Florida, 32611-8440 Gainesville, FL, USA;(2) Present address: 104 Davey Laboratory, Pennsylvania State University, 16802 University Park, PA, USA |
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| Abstract: | Direct nuclear demagnetization is used to cool high density solid3He into the magnetically ordered phases. The pressure change in the samples is detected by a capacitive strain gauge. The entropy of the samples is removed by precooling to a temperature of 0.5 mK in a field of 2.5 T. For a bcc sample with a molar volume of 20.10 cm3/mol, two magnetic transitions have been observed. A similar experiment on an hcp sample with a molar volume of 19.65 cm3/mol is being done. Preliminary data indicates no abrupt change in the pressure as observed in the bcc sample. |
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