Menon, Latika ; Malik, S. K. (1997) Antiferromagnetic ordering in the doped Kondo insulator CeRhSb Physical Review B, 55 (21). pp. 14100-14102. ISSN 0163-1829
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Official URL: http://prb.aps.org/abstract/PRB/v55/i21/p14100_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.55.14100
Abstract
CeRhSb, the so-called ``Kondo insulator," is a mixed-valent compound showing a gap formation in the electronic density of states. On the other hand, CePdSb is ferromagnetically ordered with a Curie temperature of ~17 K. We have carried out magnetic susceptibility and electrical resistivity measurements on CeRh1-xPdxSb (0≤x≤1.0), to study the ground-state properties of this system. For small Pd doping in CeRhSb, up to 20%, the gap continually diminishes and no magnetic ordering is observed down to 2 K. In the region 0.3≤x≤0.4, as soon as the gap is suppressed, an antiferromagnetic ground state is observed. In the region 0.5≤x<0.7, the compounds are not single phase. At the CePdSb end, in the region 0.7≤x≤1, the ground state is ferromagnetic. The observation of an antiferromagnetic phase in the phase diagram of CeRh1-xPdxSb, where neither end is antiferromagnetic, is interesting and is discussed in the light of some recent theoretical models.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Physical Society. |
ID Code: | 23273 |
Deposited On: | 25 Nov 2010 09:29 |
Last Modified: | 06 Jun 2011 11:39 |
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