Local crystal structure of multiferroic system BiMnO by atomic pair distribution function analysis

原子対相関関数からみたマルチフェロイック物質BiMnOの局所構造

樹神 克明   ; 飯久保 智; 社本 真一  ; Belik, A. A.*; 室町 英治*

Kodama, Katsuaki; Iikubo, Satoshi; Shamoto, Shinichi; Belik, A. A.*; Muromachi, Eiji*

We have studied the local crystal structure of a multiferroic system BiMnO by means of atomic pair distibution function (PDF) analysis on neutron powder diffraction data. The domains with space group or whose atomic shifts break a symmetry of -center exist in the bulk BiMnO with a space group , which is consistent with recent results of electron diffraction. The domain size is larger than 100 , also estimated by the PDF analysis. Because domains which have atomic shifts with different directions, typically the opposite direction, also exist, the bulk material "apparently" has a space group .