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Room-temperature delayed giant magnetodielectric effects observed in Bi4Fe2TiO12 film | | L.J. Qiao
; J. Lu
; F. Xu
; W.Y. Chu
; X.Q. Ma
; | | Date: |
30 Jun 2006 | | Subject: | Materials Science; Mesoscopic Systems and Quantum Hall Effect | | Abstract: | This letter reports our experimental results on magnetic-field-induced aftereffects in solution derived Bi4Fe2TiO12 film, in which e’ decreases as much as 600 times after treated in a 5T magnetic field as that of the pristine one. The phenomena are explained by an unusual spin-orbital coupling in film, where strong magnetic field provides drive force for spin polarized electrons of electrode to enter film, so as to form a ferromagnetic orbital state, increase the relaxation time of defect dipoles and then produce giant magnetodielectric effects. This process is reversible just by applying a opposite 0.5T magnetic field. Our findings have potential applications on magnetic fabrication of nanopatterns somehow to evade nanohazard, as well as on integraged phononic or photonic crystals on chip. | | Source: | arXiv, cond-mat/0606791 | | Services: | Forum | Review | PDF | Favorites | |
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