欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
采用激光分子束外延法制备了多铁/顺磁结构的BiFeO3/La（2/3）Sr（1/3）MnO3（BFO/LSMO）异质结,通过外场调控的方法研究了该异质结界面的电子输运以及磁电耦合特征。结果表明,异质结的输运机制来源于空间电荷限制电流机制;复合薄膜在室温下表现出的铁磁性,且磁矩来源于BFO层,异质结界面处诱导出的网状磁矩会使样品产生比较明显的磁电耦合。在零场冷却（ZFC）和场冷却（FC）下,样品的磁介电系数分别在160和170 K达到极大值,介电损耗-温度曲线在150~170附近产生分裂,该温度区间与BFO层的铁弹-极化相变相关。
英文摘要：
A multiferroic/paramagnetic heterostructure has been fabricated by successively growing La2/3Sr1/3MnO3 （LSMO） and BiFeO3 （BFO） layers on LaAlO3-（100） via a laser molecular beam epitaxy （LMBE） method. Analysis of the leakage current demonstrates that the space-charge-limited current dominates the leakage current mechanism. Magnetic measurements show that the ferromagnetism of the composite film originates from BFO layer and the net magnetic moments could be responsible for the enhanced magnetoelectric coupling. The heterostructure exhibits robust magnetodielectric effects at temperature points of 160 K and 170 K for zero field cooling （ZFC） and field cooling （FC）, respectively. Furthermore, there is a split in the loss tangent-temperature curves near temperature range of 150-170 K between different cooling conditions, which is related to phase transition in the BFO layer.
同期刊论文项目
同项目期刊论文
Transport and magnetoresistance effect in an oxygen-deficient SrTiO3/La0.67Sr0.33MnO3 heterojunction
Suppression of photovoltaic effect by magnetic field in Pr0.65(Ca0.75Sr0.25)0.35MnO3/Nb:SrTiO3 heter
Bubbles engulfment and entrapment by cellular and dendritic interfaces during directional solidifica
Morphological determination of forced shear flow rate during directional solidification of succinoni
Morphological evolution of the solid-liquid interface near grain boundaries during directional solid
X-ray diffraction, atomic force microscopy and raman spectroscopy studies of microstructure of BiFeO
Magnetic ordering and structural stability of La2/3Sr1/3MnO3/SrTiO3 (001) interfaces Adensity-functi
Suppression of photovoltaic effect by magnetic field in Pr-0.65(Ca0.75Sr0.25)(0.35)MnO3/Nb:SrTiO3 he
Thin interface analysis of a phase-field model for epitaxial growth with nucleation and Ehrlich-Schw
Favorable magnetoelectric phenomenon in Co2MnSi/PbTiO3 (001) ultrathin bilayer: A density functional
Piezoelectric, ferroelectric properties of multiferroic YMnO3 epitaxial film studied by piezorespons
Tunable dielectric properties induced by optical fields in barium strontium titanate/manganite heter
Phase-field modeling of epitaxial growth with the Ehrlich-Schwoebel barrier: Model validation and ap
Dendrite to symmetry-broken dendrite transition in directional solidification of non-axially oriente
Magnetic ordering and structural stability of La2/3Sr1/3MnO3/SrTiO3 (001) interfaces: A density-func
期刊信息
位置：