||||
我们用掠入射X射线衍射的办法(grazing incidence x-ray diffraction,GIXD),研究了超薄四方BiFeO3/LaAlO3(BFO/LAO)薄膜的畴结构,发现了切向应变驰豫导致的周期性弹性畴结构,而其周期与膜厚
的关系偏离了square root law。
详见:
Periodic elastic nanodomains in ultrathin tetragonal-like BiFeO3 films
PHYSICAL REVIEW B 88, 064103 (2013);http://dx.doi.org/10.1103/PhysRevB.88.064103
及其supplemental materials
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