In-operando and non-destructive analysis of the resistive switching in the Ti/HfO2/TiN-based system by hard x-ray photoelectron spectroscopy

2012 ◽  
Vol 101 (14) ◽  
pp. 143501 ◽  
Author(s):  
Thomas Bertaud ◽  
Malgorzata Sowinska ◽  
Damian Walczyk ◽  
Sebastian Thiess ◽  
Andrei Gloskovskii ◽  
...  
Keyword(s):  
Resistive Switching ◽  
Photoelectron Spectroscopy ◽  
X Ray ◽  
Destructive Analysis ◽  
In Operando ◽  
Non Destructive

scholarly journals Resistive Switching Characteristics of Li-Doped ZnO Thin Films Based on Magnetron Sputtering

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1282 ◽  
Author(s):  
Zhao ◽  
Li ◽  
Ai ◽  
Wen
Keyword(s):  
Thin Films ◽  
Magnetron Sputtering ◽  
Resistive Switching ◽  
Photoelectron Spectroscopy ◽  
Lattice Structure ◽  
Zno Thin Films ◽  
Bipolar Resistive Switching ◽  
X Ray ◽  
Doped Zno ◽  
Switching Characteristics

A kind of devices Pt/Ag/ZnO:Li/Pt/Ti with high resistive switching behaviors were prepared on a SiO2/Si substrate by using magnetron sputtering method and mask technology, composed of a bottom electrode (BE) of Pt/Ti, a resistive switching layer of ZnO:Li thin film and a top electrode (TE) of Pt/Ag. To determine the crystal lattice structure and the Li-doped concentration in the resulted ZnO thin films, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) tests were carried out. Resistive switching behaviors of the devices with different thicknesses of Li-doped ZnO thin films were studied at different set and reset voltages based on analog and digital resistive switching characteristics. At room temperature, the fabricated devices represent stable bipolar resistive switching behaviors with a low set voltage, a high switching current ratio and a long retention up to 104 s. In addition, the device can sustain an excellent endurance more than 103 cycles at an applied pulse voltage. The mechanism on how the thicknesses of the Li-doped ZnO thin films affect the resistive switching behaviors was investigated by installing conduction mechanism models. This study provides a new strategy for fabricating the resistive random access memory (ReRAM) device used in practice.

scholarly journals Resistive switching in a LaMnO3 + δ/TiN memory cell investigated by operando hard X-ray photoelectron spectroscopy

2019 ◽  
Vol 126 (22) ◽  
pp. 225302 ◽  
Author(s):  
Benjamin Meunier ◽  
Eugénie Martinez ◽  
Raquel Rodriguez-Lamas ◽  
Dolors Pla ◽  
Mònica Burriel ◽  
...  
Keyword(s):  
Resistive Switching ◽  
Photoelectron Spectroscopy ◽  
Memory Cell ◽  
X Ray

Colouration mechanism of underglaze copper-red decoration porcelain (AD 13th–14th century), China

2014 ◽  
Vol 21 (4) ◽  
pp. 751-755 ◽  
Author(s):  
Jian Zhu ◽  
Huiping Duan ◽  
Yimin Yang ◽  
Li Guan ◽  
Wei Xu ◽  
...  
Keyword(s):  
Copper Content ◽  
X Ray ◽  
Content Difference ◽  
Valence States ◽  
Scattering Effects ◽  
Orange Region ◽  
Destructive Analysis ◽  
Colour Generation ◽  
X Ray Absorption ◽  
Non Destructive

Underglaze copper-red decoration,i.e.the copper colourant used to paint diversified patterns on the surface of a body and then covered by transparent glaze and fired at high temperature in a reductive firing environment, is famous all over the world. However, the red colouration mechanism generated by underglaze copper remains unclear. In particular, the fact that the edges of the red patterns are orange has been ignored in previous research. Here, non-destructive analysis has been carried out on a precious fragment of early underglaze red porcelain using synchrotron radiation X-ray fluorescence, X-ray absorption near-edge spectroscopy (XANES) and reflection spectrometry techniques. The results suggest that the copper content in the red region is higher than that in the orange region, and other colour generation elements do not have obvious content difference, indicating that the colour generation effect of the underglaze red product is related to the copper content. XANES analysis shows that the valence states of copper in the red and orange regions are similar and metal copper contributes to their hues. The results of reflection spectrometry demonstrate that tiny orange hues could be attributed to the Mie scatting effect. Therefore, light-scattering effects should be considered when researching the colouration mechanism of underglaze red.

Sign in / Sign up

Export Citation Format

Share Document