Magnetization steps in (formula presented)

Physical Review B - Condensed Matter and Materials Physics

Volumn 59, Issue 2, 1999, Pages 1046-1054

  Dube C E ^c   Bonitatebus, P J ^c  

^a TUFTS UNIVERSITY   (United States)

^b MASSACHUSETTS INSTITUTE OF TECHNOLOGY   (United States)

^c BOSTON COLLEGE   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000658496     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.59.1046     Document Type: Article

References (33)

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25. The structure was solved by direct methods and refined by full-matrix least-squares methods on (Formula presented) with statistical weighting, anisotropic displacement parameters for all nonhydrogen atoms, and constrained isotropic H atoms to give (Formula presented) on all data, conventional (Formula presented) on (Formula presented) goodness of fit (Formula presented) for all (Formula presented) values and 1046 refined parameters. Programs employed: Siemens SMART and SAINT control and integration software (Siemens Analytical x-ray Instruments, Inc.), and Siemens SHELXTL-PLUS structure solution and refinement software (Siemens Industrial Automation Inc.).
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33. The magnetization of the paramagnetic ions was assumed to follow the Brillouin function, with the actual temperature T. As a consequence, the low-field susceptibility obeyed the Curie law. The fits of the 2 K magnetization were carried out using Brillouin functions for various assumed values for the spin S of the paramagnetic ions. To obtain good fits it was necessary to adjust the g factor, in addition to (Formula presented) The values for (Formula presented) were practically independent of S, and were close to those obtained from the procedure which used the modified Brillouin function of Ref. 27. Although the results for the g values did depend on S, the calculated susceptibility of the paramagnetic ions was practically independent of S.