Magnetic properties of La doped Bi_(2)FeMnO_(6) ceramic and film

摘要

We present a comprehensive study of the magnetic properties for La doped Bi_(2)FeMnO_(6) (LBFM) ceramic and film which was first deposited on (100) SrTiO_(3) substrate by pulsed laser deposition method. The LBFM film is antiferromagnetic or weak ferrimagnetic at room temperature and it shows clear magnetic anisotropy. But it is not sure whether the spin-glass behavior is present in LBFM film because of the influence from substrate. Compared to the film, LBFM ceramic shows different magnetic properties. It has a lower T_(N) and all the observations indicate that LBFM ceramic shows spin-glass behavior.