Measurement of Residual Stress in YBa2Cu3O7−x Thin Films by Raman Spectroscopy

Zhao, Peidong; Ouyang, Xiaoping; Yu, Jingfeng; Xu, Huiping; Wang, Sansheng; Li, Fang

doi:10.1007/s10909-020-02549-5

Cited by 9 publications

(3 citation statements)

References 22 publications

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“…No changes are observed in the number of modes that appear, or in the shape of the spectrum between a bulk and a thin film. This is reproduced in other works found in literature [76,77,82,83]. In [84] the authors studied Raman spectra of ultra thin YBCO films, reaching a thickness of 10 unit cells (12 nm).…”

Section: Comparison With Experimental and Theoretical Resultssupporting

confidence: 74%

“…For example, the authors in [81] present a linear relation between the frequency shift and the in-plane tensile strain, with a slope of 9.93 cm −1 / %, up to 0.3% of strain. Also, in [82] it is presented that by compressing the c axis by 0.7% the O(4) mode increases its frequency by 20 cm −1 , and by expanding the c axis by 0.4% the mode decreases its frequency by 7 cm −1 . Considering that experimental results are endowed with errors and other processes can be influencing the shift, the matching between experimental and theoretical predictions is accepted.…”

Section: Vibrational Properties 321 Bulk Modelmentioning

confidence: 97%

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Strain effect on the high T _c superconductor YBa₂Cu₃O₇: an ab initio study comparing bulk and monolayer models

Yelpo

Favre²,

Ariosa

et al. 2023

Electron. Struct.

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In this work, the effect of strain on the vibrational and electronic properties of the YBa2Cu3O7(YBCO) compound was studied through \textit{ab initio} calculations. For this, two structural models were used: a bulk model and a surface model (a monolayer with CuO2 and BaO as the terminating layers). The phonon spectra was calculated for both structures under different levels of c axis strain. The most appreciable change occurs in the vibrational properties, and in the surface case. From the simulation of the Raman spectra, we were able to quantify the Raman shift ratio as a function of the applied strain, and analyzed its behavior in terms of the overlap population of the different bonds and the reduced mass of selected phonons. The effect of the level of deformation on the band structure and the electronic density of states is small for both structures, although more noticeable in the case of the surface model. In both cases, tendencies are observed when the fine features of the band structure are analyzed by means of the tight binding model. Due to the lower symmetry, the surface model also shows modifications of the bands related to the CuO2 planes.

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Section: Comparison With Experimental and Theoretical Resultssupporting

confidence: 74%

Section: Vibrational Properties 321 Bulk Modelmentioning

confidence: 97%

Strain effect on the high T _c superconductor YBa₂Cu₃O₇: an ab initio study comparing bulk and monolayer models

Yelpo

Favre²,

Ariosa

et al. 2023

Electron. Struct.

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“…We identify Raman spectroscopy as a promising complementary method both in terms of capabilities in identifying material properties and R2R system implementation. On the identification side, Raman has been demonstrated on REBCO to provide detailed information regarding chemical composition, residual strain, in-and out-of-plane texture, oxygen content, and more [21][22][23][24][25][26][27][28]. In terms of implementation, Raman is non-destructive and easily adaptable for both offline and inline purposes.…”

Section: Introductionmentioning

confidence: 99%

Scanning Raman Spectroscopy Characterization of 1 Meter Long REBCO Coated Conductor

Castaneda,

Majkic,

Goel

et al. 2024

IOP Conf. Ser.: Mater. Sci. Eng.

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In this work, we evaluate the use of scanning Raman spectroscopy for characterizing long lengths of REBCO coated conductor tapes, as it can provide detailed insight into structure, composition, and local variations arising from defects or strain. We generate 2D maps of Raman wavelength and intensity features over extended 1 meter length of conductor and correlate them to the information collected by reel-to-reel (R2R) 2D X-Ray Diffraction (2D-XRD) and R2R Scanning Hall Probe Microscopy (SHPM). The three methods are compared in terms of depth of information, detectability of variation in features of interest and the potential for evaluating critical current performance over a range of fields and temperatures.

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Substrate and thickness influence on YBa$$_2$$Cu$$_3$$O$$_{7-\delta }$$ thin films grown by PLD deposition

et al. 2022

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Measurement of Residual Stress in YBa2Cu3O7−x Thin Films by Raman Spectroscopy

Cited by 9 publications

References 22 publications

Strain effect on the high T _c superconductor YBa₂Cu₃O₇: an ab initio study comparing bulk and monolayer models

Strain effect on the high T _c superconductor YBa₂Cu₃O₇: an ab initio study comparing bulk and monolayer models

Scanning Raman Spectroscopy Characterization of 1 Meter Long REBCO Coated Conductor

Substrate and thickness influence on YBa$$_2$$Cu$$_3$$O$$_{7-\delta }$$ thin films grown by PLD deposition

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Measurement of Residual Stress in YBa2Cu3O7−x Thin Films by Raman Spectroscopy

Cited by 9 publications

References 22 publications

Strain effect on the high T c superconductor YBa2Cu3O7: an ab initio study comparing bulk and monolayer models

Strain effect on the high T c superconductor YBa2Cu3O7: an ab initio study comparing bulk and monolayer models

Scanning Raman Spectroscopy Characterization of 1 Meter Long REBCO Coated Conductor

Substrate and thickness influence on YBa$$_2$$Cu$$_3$$O$$_{7-\delta }$$ thin films grown by PLD deposition

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Product

Resources

About

Strain effect on the high T _c superconductor YBa₂Cu₃O₇: an ab initio study comparing bulk and monolayer models

Strain effect on the high T _c superconductor YBa₂Cu₃O₇: an ab initio study comparing bulk and monolayer models