Polymorphous GdScO3 as high permittivity dielectric
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Polymorphous GdScO3 as high permittivity dielectric
- 发表刊物：
- Journal of Alloys and Compounds
- 摘要：
- Four different polymorphs of GdScO3 are assessed theoretically and experimentally with respect to their suitability as a dielectric. The calculations carried out by density functional theory reveal lattice constants, band gaps and the energies of formation of three crystal phases. Experimentally all three crystal phases and the amorphous phase can be realized as thin films by pulsed laser deposition using various growth templates. Their respective crystal structures are confirmed by X-ray diffraction and transmission electron microscopy reflecting the calculated lattice constants. X-ray photoelectron spectroscopy unveils the band gaps of the different polymorphs of GdScO3 which are above 5 eV for all films demonstrating good insulating properties. From capacitance voltage measurements, high permittivities of up to 27 for hexagonal GdScO3 are deduced.
- 合写作者：
- A. Schäfer · K. Rahmanizadeh · G. Bihlmayer · [9th Gang Niu] ·
- 是否译文：
- 否
- 发表时间：
- 2015-12-05