Accession Number : AD0253433

Title :   MAGNETIC SUSCEPTIBILITIES OF ERBIUM AND HOLMIUM ETHYLSULPHATES

Corporate Author : OXFORD UNIV (UNITED KINGDOM) CLARENDON LAB

Personal Author(s) : COOKE, A.H. ; LAZENBY, R. ; LEASK, M.J.M.

Report Date : JUN 1960

Pagination or Media Count : 1

Abstract : The magnetic susceptibilities of erbium ethylsulphate and holmium ethylsulphate have been measured at temperatures between room temperature and 1.3 K. The results are compared with the values calculated from paramagnetic resonance data, and good agreement is obtained. The susceptibility of the erbium salt at low temperatures can be accounted for by a ground doublet having g'' = 1.58 ! 0.05 and g' = 8.53 ! 0.05, with the lowest excited states some 1/50 cm above the ground doublet. The susceptibility of the holmium salt in the helium range of temperatures can be accounted for by a triplet ground state having g'' = 7.70 ! 0.05 and g' = 3.86 ! 0.05, split into a doublet and a singlet, the singlet being 1/5.5 cm above the doublet. The Jahn-Teller splitting of the doublet is not more than 1/0.1 cm. (Author)

Descriptors :   *ERBIUM, *HOLMIUM, *HOLMIUM COMPOUNDS, *RARE EARTH COMPOUNDS, *SULFATES, ETHYL RADICALS, MAGNETIC PROPERTIES, PARAMAGNETIC RESONANCE.

Distribution Statement : APPROVED FOR PUBLIC RELEASE