Thumbnail
Access Restriction
Open

Author Gerstein, B. C. ♦ Jennings, L. D. ♦ Spedding, F. H.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ CRYSTALS ♦ ENERGY LEVELS ♦ LATTICES ♦ LUTETIUM SULFATES ♦ MAGNETIC FIELDS ♦ MATRICES ♦ MEASURED VALUES ♦ SPECIFIC HEAT ♦ SUSCEPTIBILITY ♦ TEMPERATURE ♦ THULIUM SULFATES
Abstract The heat capacity and principal susceptibilities of thulium ethylsulfate were measured in the range 15 to 300 deg K and 1.3 to 200 deg K, respectively. The heat capacity of lutetium ethylsulfate was measured in the range 15 to 300 deg K. The contribution of the 4f electrons in Tm to the heat capacity of thulium ethylsulfate was evaluated experimentally by making an assumption concerning the difference in the lattice heat capacities of Tm and Lu ethylsulfates. The contribution of the 4f electrons in Tm to the heat capacity and principal susceptibilities was calculated using the angular part of the crystal field matrix elements calculated by Stevens and Elliott STAK. W. H. Stevens, Proc. Phys. Soc. (London) A65, R. J. Elliott and K. W. H. Stevens, Proc. Roy. Soc. (London) A219, 387 (l953); A218, 553 (1953)!, and two sets of crystal field parameters currently available in the literature STAE. Y. Wong and I. Richman, J. Chem. Phys. 34, 1182 (1961); J. B. Gruber and J. G. Conway, ibid. 32, 1531 (1960)!. The experimental results indicate that the crystal field parameters of Wong and Richman are more nearly correct than those of Gruber and Conway. (auth)
ISSN 00219606
Educational Use Research
Learning Resource Type Article
Publisher Date 1962-10-01
Publisher Department Ames Lab., Ames, Iowa
Journal Journal of Chemical Physics
Volume Number 37
Technical Publication No. IS-245
Organization Ames Lab., Ames, Iowa


Open content in new tab

   Open content in new tab