E D Bauer et al 2001 J. Phys.: Condens. Matter 13 4495 doi:10.1088/0953-8984/13/20/310
E D Bauer, A Slebarski1, E J Freeman, C Sirvent2 and M B Maple
Show affiliationsThe filled skutterudite CeOs4Sb12 and its nonmagnetic analogue LaOs4Sb12 have been synthesized in single-crystal form using the molten-metal-flux growth technique with Sb flux. Electrical resistivity measurements on CeOs4Sb12 indicate that it is a Kondo insulator with an energy gap of ΔE/kB~10 K. Lattice parameter and magnetic susceptibility measurements suggest that the Ce ions are trivalent in CeOs4Sb12. Specific heat and magnetization measurements reveal an enhanced value of the electronic specific heat coefficient γ~92 mJ mol-1 K-2 and Pauli susceptibility, reminiscent of a moderately heavy-fermion material.
81.10.Dn Growth from solutions
72.20.-i Conductivity phenomena in semiconductors and insulators
75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects
Issue 20 (21 May 2001)
Received 30 March 2001
E D Bauer et al 2001 J. Phys.: Condens. Matter 13 4495
N A Frederick and M B Maple 2003 J. Phys.: Condens. Matter 15 4789
Siegfried Clar et al 1996 J. Phys.: Condens. Matter 8 6803
Daniel M Pajerowski et al 2007 New J. Phys. 9 222
K Nagamine 2003 J. Phys. G: Nucl. Part. Phys. 29 2031
P L Christiansen et al 2003 J. Phys. A: Math. Gen. 36 7589
L J Boya et al 1993 J. Phys. A: Math. Gen. 26 5825
Yoshinori Takahashi 1997 J. Phys.: Condens. Matter 9 10359
Radu Balescu et al 2005 J. Phys.: Conf. Ser. 11
Nicola M Pugno 2006 J. Phys.: Condens. Matter 18 S1971