Transport properties in phase IV of CexLa1-xB6

We have studied the magnetoresistance of CexLa1-xB6 in detail and obtained the magnetic phase diagram of CexLa1-xB6. The x dependence of the critical field at T = 0 K indicates that the long-range ordering in zero magnetic fi eld exists down to x similar to 0.3 and it seems that it is necessary for p hase IV to exist in the low fields in order that phase II exists in the hig her fields. Judging from the various experiments, phase IV seems to be AF o rdering state. A large residual resistivity in phase IV indicates the exist ence of the large magnetic scattering in this phase. (C) 2000 Published by Elsevier Science B.V. All rights reserved.