Possible coexistence of weak ferromagnetism and spatially modulated spin structure in ferroelectrics Vorob'ev, G. P. ; Zvezdin, A. K. ; Kadomtseva, A. M. ; Popov, Yu. F. ; Murashov, V. A. ; Rakov, D. N. Abstract Publication: Physics of the Solid State Pub Date: November 1995 Bibcode: 1995PhSS...37.1793V