Weak hybridization and isolated localized magnetic moments in the compounds CeT<sub>2</sub>Cd<sub>20</sub> (T = Ni, Pd) [electronic resource].
- Washington, D.C. : United States. National Nuclear Security Administration, 2015. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
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- Article numbers 315,602 : digital, PDF file
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- United States. National Nuclear Security Administration, United States. Department of Energy. Office of Basic Energy Sciences, and United States. Department of Energy. Office of Scientific and Technical Information
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- Free-to-read Unrestricted online access
- Here, we report the physical properties of single crystals of the compounds CeT<sub>2</sub>Cd<sub>20</sub> (T = Ni, Pd) that were grown in a molten Cd flux. Large separations of ~6.7- 6.8 Å between Ce ions favor the localized magnetic moments that are observed in measurements of the magnetization. The strength of the Ruderman-Kittel-Kasuya- Yosida magnetic exchange interaction between the localized moments is severely limited by the large Ce-Ce separations and by weak hybridization between localized Ce 4f and itinerant electron states. Measurements of electrical resistivity performed down to 0.138 K were unable to observe evidence for the emergence of magnetic order; however, magnetically-ordered ground states with very low transition temperatures are still expected in these compounds despite the isolated nature of the localized magnetic moments. Such a fragile magnetic order could be highly susceptible to tuning via applied pressure, but evidence for the emergence of magnetic order has not been observed so far in our measurements up to 2.5 GPa.
- Published through SciTech Connect., 07/20/2015., Journal of Physics. Condensed Matter 27 31 ISSN 0953-8984 AM, B. D. White; D. Yazici; P. -C. Ho; N. Kanchanavatee; N. Pouse; Y. Fang; A. J. Breindel; A. J. Friedman; M. B. Maple., and Univ. of California, San Diego, CA (United States)
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