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タイトル: MRI Study of Nucleation and Growth During the Field Induced First Order Phase Transition Between U2D2 and CNAF 3He near Absolute Zero
著者: Tanaka, T.
Yatsuya, M.
Mizusaki, T.
Sasaki, Y.  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-6948-2736 (unconfirmed)
著者名の別形: 佐々木, 豊
キーワード: Nuclear ordered solid helium-3
Phase transition
Nucleation
NMR imaging
発行日: Mar-2010
出版者: Springer
誌名: Journal of Low Temperature Physics
巻: 158
号: 5-6
開始ページ: 737
終了ページ: 748
抄録: The field-sweep-induced first order phase transition between two nuclear antiferromagnetic states of solid 3He was studied at the temperatures near absolute zero. The phase transition proceeded in two stages. The first stage was governed by a nucleation process, in which many small seeds of the stable phase appeared in many places throughout a crystal. The measured nucleation rate was essentially temperature independent, once we corrected the data for weak temperature dependence due to limited growth of the seeds after nucleation. With the help of MRI measurements, we understand that the nucleation occurs at peculiar heterogeneous nucleation sites, which are distributed in the entire crystal. Magnetic planar defects in the nuclear ordered spin structure are proposed as a candidate for the nucleation sites. The second stage is understood as a process, which is controlled by the flow of released latent heat across the solid-liquid interface.
著作権等: The original publication is available at www.springerlink.com
この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
This is not the published version. Please cite only the published version.
URI: http://hdl.handle.net/2433/120331
DOI(出版社版): 10.1007/s10909-009-0020-y
出現コレクション:学術雑誌掲載論文等

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