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Pauli paramagnetism enhancement and unusual magnetic ordering in CeB6
- Source :
-
Physica B . Apr2008, Vol. 403 Issue 5-9, p742-743. 2p. - Publication Year :
- 2008
-
Abstract
- Abstract: Precision measurements of charge transport parameters and magnetization have been carried out on the high-quality single crystals of CeB6 at temperatures 1.8–300K. It is shown that in the temperature interval of 5K<T<T*∼80K the magnetic contribution in resistivity obeys the power law ρ m∼T −0.4, which corresponds to the regime of weak localization of charge carriers. At the same temperatures an asymptotic behavior of thermopower S∼−ln T is found together with nearly constant and negative Hall coefficient R H(T) and an essential decrease of the charge carriers mobility μ H(T)=R H(T)/ρ(T). Instead of the Curie–Weiss type dependence, an asymptotic form χ(T)∼T −0.8 is obtained for susceptibility of CeB6 in the range 15–300K. Such a behavior of transport and magnetic characteristics contradict to the predictions of Kondo-lattice approach for this archetypal SCES. An alternative interpretation is developed at present study and based on (i) the itinerant paramagnetism and DOS renormalization at temperatures below T*∼80K and (ii) realization of a complex H–T magnetic phase diagram, which is caused by a competition between SDW and 4f-antiferromagnetism in CeB6. [Copyright &y& Elsevier]
- Subjects :
- *PARAMAGNETISM
*MAGNETISM
*CERIUM
*BORIDES
Subjects
Details
- Language :
- English
- ISSN :
- 09214526
- Volume :
- 403
- Issue :
- 5-9
- Database :
- Academic Search Index
- Journal :
- Physica B
- Publication Type :
- Academic Journal
- Accession number :
- 31396066
- Full Text :
- https://doi.org/10.1016/j.physb.2007.10.023