KONDO COMPOUND;
MAGNETIC STRUCTURE;
ANTIFERROMAGNET;
NEUTRON DIFFRACTION;
CEPDSN;
MAXIMUM ENTROPY METHOD;
D O I:
10.1143/JPSJ.63.2337
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
Magnetic structure of the Kondo compound CePdSn is studied by neutron diffraction experiments on a single-crystalline sample. Below T(N)=7 K, Ce moments establish a single-Q type ordering S(nv)=a(v) e(ik.R(n) + a(v)* e(-ik.R(n)) with incommensurate modulation vector k=0.473b*. The polarization vectors a(v) cannot uniquely be determined from scattering intensities, and thus those which reproduce the intensities are selected using a maximum entropy method. The polarization vectors have a, b and c components with root mean square of the moment m(rms)=0.82+/-0.08 mu(B) (m(rms)a=0.59, M(rms)b=0.48, m(rms)c=0.30 mu(B)) at T = 1.5 K.