We have studied the effects of Ga and Si substitutions on the antiferromagnetic (AF) Kondo semiconductor CeRu 2 Al 10 which orders at rather high temperature T N = 27 K. In CeRu 2 Al 10-x Ga x , the semiconducting behavior is suppressed with increasing x up to x = 0.8. Thereby, T N is suppressed down to 24.5 K. The Si substitution changes the AF state more strongly. In fact, T N decreases to 23 K for CeRu 2 Al 9.9 Si 0.1 , probably due to the doping of 3p electrons. The magnetic susceptibility along the orthorhombic a-axis exhibits a sharp peak at T N below which those along the b-and c-axes do not decrease. This change can be explained by the reorientation of the ordered moments from the c-axis in CeRu 2 Al 10 to the a-axis in CeRu 2 Al 9.9 Si 0.1 . These findings indicate the importance of electron density for the unusual AF order in CeRu 2 Al 10 .
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.