Volume 27, Issue 1 (4-2019)                   www.ijcm.ir 2019, 27(1): 255-262 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Mohammadi M, Khoshnavisan B. Threshold of the twin boundaries in micro-nanoparticles of YBa2Cu3O7-x superconductor. www.ijcm.ir. 2019; 27 (1) :255-262
URL: http://ijcm.ir/article-1-1240-en.html
Abstract:   (175 Views)
Twinning is one of the main mechanisms of plastic deformation in crystals and its effect on the empirical properties has been important in materials science. Twin boundaries have been proved to be effective flux pinning centers in YBCO that increasing the critical current density. High-temperature superconductor YBa2Cu3O7-x (YBCO) nanoparticles were prepared by solid state alloying method. The phase formation and microstructure of the bulk and nano powders of YBCO were studied, using Rietveld refinement and Williamson–Hall (W–H) analysis. We estimated the critical length scale around 250 nm when it will be still energetic to create twins instead of remaining elastically strained and twin less. The synthesis YBCO powder has very small grains with the size about a few (30-40) nano meters. The microstructure analysis shows that the obtained YBCO powders have very fine grains with a size around several tens of nanometers. Twin boundaries did not observe in YBCO nanocrystalites. Therefore, designing of twin microstructure and effective control of the particles size in YBCO, has an effect directly on the critical current density of the samples that are important for its commercial exploitation.
Full-Text [PDF 118 kb]   (62 Downloads)    
Type of Study: Research | Subject: Special
Received: 2019/03/16 | Accepted: 2019/03/16 | Published: 2019/03/16

1. [1] Paturi P., Raittila J., Grivel J.-C., Huhtinen H., Seifi B., Laiho R., Andersen N.H., "Preparing superconducting nanopowder based YBCO/Ag tapes", physica C 372-376 (2002) 779-781. [DOI:10.1016/S0921-4534(02)00905-X]
2. [2] Glowacki B., "Texture development of HTS powder-in-tube conductors", Superconductor Science and Technology 11(1998) 989-995. [DOI:10.1088/0953-2048/11/10/019]
3. [3] Khoshnevisan B., Ross D. K., Broom D.P., Babaeipour M., "Observations of twinning in YBa2Cu3O6+x, 0 < x < 1, at high temperatures", J. Phys, Condens. Matter 14 (2002) 1–16. [DOI:10.1088/0953-8984/14/41/331]
4. [4] Hilgenkamp H., Mannhart J., "Grain boundaries in high-Tc superconductors", Rev. Mod. Phys. 74(2) (2002) 485. [DOI:10.1103/RevModPhys.74.485]
5. [5] Campbell A.M., Evetts J.E., Dew-Hughes D., "Pinning of Flux Vortices in Type II Superconductors", Phil.Mag 18(1968) 313. [DOI:10.1080/00318086.1968.11716235]
6. [6] Rouco V., Palau A., Guzman R., Gazquez J., Coll M., Obradors X., Puig T., "Role of twin boundaries on vortex pinning of CSD YBCO nanocomposites", J. Mater. Res 4 (2006)795.
7. [7] Choy J. H., Choe W. Y., Choi Q. W., "Preparation of 90K superconductor YBa2Cu3O7−δ via oxide precursors BaCuO2 and Y2Cu2O5 ", Mat. Res. Bull 24 (1989) 867-874. [DOI:10.1016/0025-5408(89)90050-0]
8. [8] Young R.A., "The Rietveld Method", Oxford Science Publications (1993)
9. [9] Boyko V. S., Garber R. I., Kossevich A. M., "Reversible Crystal Plasticity", AIP, New York(1994)
10. [10] Boyko V. S., Chan S-W, Chopra M., "Shape of a twin as related to the inelastic forces acting on twinning dislocations in YBa2Cu3O7−δ", PRB 63 (2001) 224521 [DOI:10.1103/PhysRevB.63.224521]
11. [11] Dorosinskii L. A., Indenbom M. V., Nikitenko V. I., Farber B. Y., "Kinetics of the changes in the twin structure in YBa2 Cu3 O7-x single crystals", JETP Letter. E 49 (1989) 182.
12. [12] LaGraff J. R., Payne D. A., "Oxygen stoichiometry and mobility effects on domain wall motion in ferroelastic YBa2Cu3O7-δ", Ferroelectrics 130 (1992) 87-105 [DOI:10.1080/00150199208019536]
13. [13] Arlt G., "Twinning in ferroelectric and ferroelastic ceramics: stress relief", J. Mater. Sci. 25(1990) 2655-2666. [DOI:10.1007/BF00584864]
14. [14] Zhu Y., Tafto J., Suenaga M., "Defects in High Tc Cuprate Superconductors ", MRS Bull. 16 (1991) 54-59. [DOI:10.1557/S0883769400055536]
15. [15] Roy T., Mitchell T. E., "Twin boundary energies in YBa2Cu3O7-x and La2CuO4", Philos. Mag. A 63(1991) 225-232 [DOI:10.1080/01418619108204846]
16. [16] Boiko Y., Jaeger H., Aslan M., Schulze K., Petzow G., "Elastic twins in YBa2Cu3O7 crystals", Mater. Lett. 11(1991) 207-211 [DOI:10.1016/0167-577X(91)90082-H]
17. [17] Chumbley L. S., Kramer M. J., Kim M. R., Laab F. C., "Estimation of twin wall energy by measurement of twin spacing ", Mater. Sci. Eng. A 124(1990) L19-21. [DOI:10.1016/0921-5093(90)90162-V]
18. [18] Mohammadi M., Khoshnevisan B., "Effects of K and Ca doping on twin boundary energy of cupperate superconductors", Physica C: Superconductivity and its applications 523 (2016) 5–9. [DOI:10.1016/j.physc.2016.02.002]
19. [19] Mohammadi M., Khoshnevisan B., Hashemfar S. J., "Twin boundary energy and characterization of charge redistribution near the twin boundaries of cupperate superconductors", Physica C 507 (2014)41-46. [DOI:10.1016/j.physc.2014.09.013]
20. [20] Williamson G.K., Hall W.H., "X-ray line broadening from filed aluminium and wolframL'elargissement des raies de rayons x obtenues des limailles d'aluminium et de tungstene Die verbreiterung der roentgeninterferenzlinien von aluminium- und wolframspaenen", Acta Metall 1(1953)22-31. [DOI:10.1016/0001-6160(53)90006-6]
21. [21] Jorgensen J.D., Shaked H., Hinks D.G., Dabrowski B., Claus H., "Oxygen vacancy ordering and superconductivity in YBa2Cu3O7−x", Physica C 153(1988) 578-581 [DOI:10.1016/0921-4534(88)90721-6]

Add your comments about this article : Your username or Email:

© 2019 All Rights Reserved | Iranian Journal of Crystallography and Mineralogy

Designed & Developed by : Yektaweb