In situ observation of two-step 90° domain reversal with different characteristics in PMN–38%PT single crystalLEAD titanateSINGLE crystalsPOLARIZING microscopesELECTRIC fieldsDomain structures and their reversal process of (010)-cut Pb(Mg1/3Nb2/3)O3–38%PbTiO3 single crystal were in situ ...
pmnpt光谱吸收系数 光谱吸收系数是材料对特定波长光吸收能力的量化指标，数值越大代表材料吸收光的能力越强。拿生活中常见的玻璃来说，普通玻璃对可见光的吸收系数低，光线容易穿透，而汽车贴膜玻璃吸收系数高，能阻挡更多阳光进入车内。不同材料的光谱吸收系数差异很大，比如金属材料在可见光区通常具有高吸收系数，而...
This paper presents the first experimental demonstration of localized ferroelectric domains and their 2D and 3D patterns inside 0.62Pb(Mg1/3Nb2/3)O-3-0.38PbTiO(3) (PMN-38PT) single-domain crystals engineered with focused near-infrared femtosecond laser pulses. Two types of domains are optically ...
Strain anisotropyPiezoelectric responseHere we report strain anisotropy and piezoelectric response in PMN–38PT single crystal along the spontaneous direction 〈100〉 and non-spontaneous direction 〈110〉. Piezoelectric coefficient of crystals oriented along 〈110〉 ( d 33〈110〉) is as high as 1200 ...
利用压电响应力显微术开展了PMN-PT弛豫铁电单晶铁电畴结构的三维极化取向成像,畴结构的不均匀性及极化状态稳定性机理的研究.揭示了纳米尺度畴结构的不均匀性源于纳米尺度极性微区的相互作用和无规场之间的共同调制,而单晶表面屏蔽电荷机制主要源于大气环境下水的溶解性吸附,该机制对PMN-PT单晶中畴状态的稳定性及材料...