Unambiguous evidence for magnetoelectric coupling of multiferroic origin in 0.73BiFeO(3)-0.27PbTiO(3)

作者：Bhattacharjee Shuvrajyoti; Pandey V; Kotnala R K; Pandey Dhananjai^*

来源：Applied Physics Letters, 2009, 94(1): 012906.

DOI：10.1063/1.3068000

• antiferromagnetic materials
• bismuth compounds
• ferroelectric materials
• ferroelectric transitions
• lattice constants
• lead compounds
• magnetisation
• magnetoelectric effects
• multiferroics
• Neel temperature
• permittivity
• space charge

Magnetization, frequency dependent dielectric, and structural studies on 0.73BiFeO(3)-0.27PbTiO(3) in the temperature range from 300 to 600 K reveal anomalies in the unit cell parameters and the intrinsic value of the dielectric constant, free from space charge contributions, at the antiferromagnetic transition temperature (T-N). Our results provide unambiguous confirmation of magnetoelectric coupling of multiferroic origin at T-N and evidence for monoclinic distortion of the ferroelectric phase.

• 出版日期2009-1-5