Ferromagnetic behavior of decamethylchromocenium tetracyanoethanide (CrCp[sub 2][sup *])(TCNE)

Journal Article · Sat May 15 04:00:00 EDT 1993 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.353671· OSTI ID:6624652

Zuo, F; Zane, S ^[1]; Zhou, P; Epstein, A J ^[2]; McLean, R S; Miller, J S ^[3]

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1. Department of Physics, University of Miami, Coral Gables, Florida 33124 (United States)
2. Physics Department, Ohio State University, Columbus, Ohio 43210 (United States)
3. Science and Engineering Laboratories, Central Research and Development Department, Du Pont, Wilmington, Delaware 19880-0328 (United States)

Studies on the magnetic properties of decamethylchromocenium tetracyanoethanide, [CrCp[sup *][sub 2]][TCNE] are reported herein. Near-zero field ([ital H]=150 mG) data indicates a ferromagnetic transition with [ital T][sub [ital c]]=3.65 K. The temperature dependence below [ital T][sub [ital c]] can be fit to a mean-field result [ital M]=[ital M][sub 0](1[minus][ital T]/[ital T][sub [ital c]])[sup 1/2], and the data above [ital T][sub [ital c]] gives a critical exponent [gamma]=1.2 for the dc magnetic susceptibility. Data at higher temperature indicates a strong 1-D ferromagnetic behavior. Magnetizations at different [ital H] and [ital T] at low temperature can be scaled to a universal function with [ital M]=[ital f]([ital H]/[ital T][sup 3.2]). The reduction in [ital T][sub [ital c]] in [CrCp[sup *][sub 2]][TCNE] compared with [FeCp[sup *][sub 2]][TCNE] indicates a competition between the coupling constants and the residing spins.

• DOE Contract Number: FG02-86ER45271
• OSTI ID: 6624652
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 73:10; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606* -- Other Materials-- Physical Properties-- (1992-)
COUPLING CONSTANTS
MAGNETIC PROPERTIES
MEAN-FIELD THEORY
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SCALING
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE