Author/Authors :
Dai، نويسنده , , Yao-Dong and Yu، نويسنده , , Zhi and He، نويسنده , , Yun and Huang، نويسنده , , Hong-Bo and Shao، نويسنده , , Ting and Lin، نويسنده , , Jun and Musa Ali، نويسنده , , Abdelilah and Jiang، نويسنده , , Zhong-Ying and Hsia، نويسنده , , Yuan-Fu، نويسنده ,
Abstract :
57Fe Mössbauer spectroscopy has been used to study the noncolinear spiral antiferromagnetic coupling in FeOCl. The paramagnetic to antiferromagnetic transition occurs at 85±1 K. Our Mössbauer studies confirm that the preferential orientations of the spin of Fe3+ which are crystallographically of equivalent sites are parallel to the b and c axes with varied timescale of spin–spin relaxation as a result of competition among the intralayer antiferromagnetic superexchange coupling, ferromagnetic direct exchange coupling, and mixed interlayer dipolar–dipolar interaction.
