Possibility of magnetization distribution measurements by means of polarized neutron powder diffraction under high magnetic field

Kakurai, Kazuhisa; Takeda, Masayasu  ; Nishihara, Yoshikazu*; Sasaki, Yuji*; Kishimoto, Mikio*; Awano, Hiroyuki*

Magnetization distribution maps deduced from the measurement of polarization dependent cross-sections have provided unique information in understanding of the detailed electronic configurations in mixed valence materials and molecular magnets. Because of the limited neutron flux the method has been mostly applied to single crystal studies. In the advent of strong pulsed neutron source with intense high resolution powder diffractomer the magnetization distribution measurements by means of polarized neutron powder diffraction can become common place. The introduction of the high magnetic field may extend the applicability of the method to materials requiring high saturation field. In this lecture the polarized neutron powder diffraction experiment on Fe16N2 performed in the frame work of "Ibaraki Prefecture Neutron Utilization Working Subgroup on nano-magnetic materials" will be presented and the possibility of the method at J-PARC will be discussed.