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The phase transition in solid orthohydrogen
Author(s) -
Moraal H.
Publication year - 1972
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220500138
Subject(s) - phase transition , condensed matter physics , ferroics , materials science , lattice (music) , mean field theory , thermodynamics , quantum phase transition , physics , quantum critical point , acoustics
A mean‐field theory for the phase transition in solid orthohydrogen is presented. For this particular form of the field it can be shown that the order‐disorder transition has to be accompanied by a change of crystal lattice. The transition temperatures found for o‐H 2 and p‐D 2 are 3.44 and 4.19 K, respectively, which values have to be compared with the experimental values of 2.91 and 3.99 K, respectively.