Magnetic structure of Pr6Fe13Ge studied by Mossbauer effect and neutron diffraction

Magnetic structure of Pr6Fe13Ge at room temperature has been investigated b y magnetic measurement, Mossbauer effect and neutron diffraction. Magnetic atoms are closely packed up and down the mirror planes at z = 0 and 1/2 and separated by the non-magnetic atoms located on the planes at z = 1/4 and 3 /4, which constructs an M/NM/M sandwich structure (M: magnetic, NM: non-mag netic). The intralayer magnetic moments couple ferromagnetically and are ou t of ab plane at a small angle so as to form a component along c-axis. The interlayer coupling is antiferromagnetic for the ab component while ferroma gnetic for the c component.