90-Degree Bloch Domain Wall Structure in a Cubic Crystal with a Negative   Magnetic Anisotropy
  An influence of strong sample demagnetization field on the structure of plane 90-degree Bloch domain walls in a cubic (001)-crystal with a negative first constant of magnetic anisotropy is considered. 
Svitlana A. Dyachenko, Bogdan M. Tanygin, Olexandr V. Tychko
cond-mat.other