Texture and magnetic anisotropy of YBa2Cu3O7-x film on MgO substrate

Cornejo, H. Sanchez; Valladares, L. De Los Santos; Barnes, C. H. W.; Moreno, N. O.; Domínguez, A.

doi:10.1007/s10854-020-04623-w

Cited by 9 publications

(2 citation statements)

References 27 publications

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“…Pseudo cubic lattice parameter for STO substrate is reported to be 3.905 Å [12]. Pseudo cubic lattice parameter of LSMO (a ∼ 3.876) [12] and orthorhombic lattice parameter of YBCO (a = 3.82, b = 3.89) [13] is comparable with the lattice parameter of STO. In Fig.…”

Section: Resultsmentioning

confidence: 81%

Structural and magnetic anisotropy in YBa$_2$Cu$_3$O$_7$/La$_{0.67}$Sr$_{0.33}$MnO$_3$ bilayer on SrTiO$_3$ substrate

Singh

Pandeya

Dutta

et al. 2023

SciPost Phys. Proc.

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We study the magnetic properties and emergence of superconductivity in YBa_22Cu_33O_77 (YBCO)/ La_{0.67}0.67Sr_{0.33}0.33MnO_33 (LSMO) heterostructures. Bilayer films of superconducting layer, YBCO, and ferromagnetic layer, LSMO were grown on SrTiO_{3}3 (STO) (001) substrate using ultrahigh vacuum Pulsed Laser Deposition system. Magnetization data at 100 K as a function of applied magnetic field shows ferromagnetic behaviour due to the LSMO layer. Cooling below 100 K leads to superconductivity in this material; the onset of superconductivity occurs at a temperature, T_{c,SC},Tc,SC, of 86 K for H_{ext}\perp cHext⊥c (in-plane) & 84 K for H_{ext}||cHext||c (out-of-plane) under 100 Oe applied field. In-plane magnetic measurements show significant suppression of diamagnetic behaviour as compared to the out-of-plane measurements. The susceptibility signals are higher for out-of-plane direction. Such strong anisotropy in magnetism and the transition temperatures reveal complex interplay of magnetism and superconductivity in this system and calls for further study in this direction.

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Section: Resultsmentioning

confidence: 81%

Structural and magnetic anisotropy in YBa$_2$Cu$_3$O$_7$/La$_{0.67}$Sr$_{0.33}$MnO$_3$ bilayer on SrTiO$_3$ substrate

Singh

Pandeya

Dutta

et al. 2023

SciPost Phys. Proc.

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“…Currently, among the various limitations to be solved during the development of superconducting materials, there are still pendant tasks to overcome such as achieving temporal stability of superconductivity behavior at several experimental conditions [1], getting vortex creep [2], and avoiding the aging effect and environmental degradation [3][4][5][6][7]. In particular, it is well known that the superconductivity property of cuprate superconductors degrades or destroys with time [8].…”

Section: Introductionmentioning

confidence: 99%

Aging and Environmental Effects on the Superconductor $$\left[{{\text{Y}}}_{1\;-\;x}{{\text{Ca}}}_{x}\right]{{\text{SrBaCu}}}_{2.80}{\left({{\text{BO}}}_{3}\right)}_{0.20}{{\text{O}}}_{y}$$ with $$0.10\;\le\;x\;\le\;0.50$$

Bustamante Dominguez,

Sanchez Cornejo,

González

et al. 2024

J Supercond Nov Magn

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The long-term (more than 20 years) aging effect and degradation study of a $$\left[{{\text{Y}}}_{1\;-\;x}{{\text{Ca}}}_{x}\right]{{\text{SrBaCu}}}_{2.80}{\left({{\text{BO}}}_{3}\right)}_{0.20}{{\text{O}}}_{y}$$ Y 1 - x Ca x SrBaCu 2.80 BO 3 0.20 O y powder ceramic superconductors with $$0.10\;\le\;x\;\le\;0.50$$ 0.10 ≤ x ≤ 0.50 are studied by X-ray diffraction and DC Magnetic Property Measurement System (DC-MPMS-SQUID). The samples prepared by solid state reaction were well characterized and stored at normal conditions of pressure and temperature for more than 20 years. The aged samples present the formation of BaCO3 due to the exposure with the environment during that period. The temperature dependence of the magnetization under Hext = 10 Oe reveal that the superconducting state remains in the samples, except for that with x = 0.10, where a higher magnetic field (20 kOe) is required to be applied to observe a superconducting response. Remarkably, the samples show the same TC values despite the aging indicating that the magnetic alignment of the formed BaCO3 affects the magnetic propertied of the whole sample but not the superconducting alignment of the doped YBCO. This is also reflected in the $${\chi }^{-1}({\text{T}})$$ χ - 1 ( T ) plots at normal state, which show both ferromagnetic and antiferromagnetic contribution, in contrast to what was obtained in the pristine samples which only presented antiferromagnetic coupling. From M(H) loops, the critical current density values at 10 K are obtained by using the critical Bean model in order to estimate the transport capabilities of the aged powders.

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YBa2Cu3O7 films grown onto SrTiO3 and YSZ substrates by chemical solution deposition of trifluoroacetates

et al. 2021

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We report the preparation and characterization of YBa2Cu3O7 (YBCO) films grown onto SrTiO3 and YSZ substrates by the trifluoroacetates chemical solution deposition method and following sintering with oxygen atmosphere at 860 °C. The X-ray diffraction (XRD) reveals (00ℓ) – oriented crystallites indicating epitaxial growth of the films in the c-direction. Despite granular morphology and the presence of Y2BaCuO5 and CuO as minor secondary phases, the technique shows the successful formation of the superconducting YBCO and preventing the formation of the unwanted BaCO3 phase. Rocking curve measurements of the (005) reflection for the YBCO/SrTiO3 was fitted with one Gaussian function with full width at the half maximum (FWHM) of 0.44° confirming that it consists of YBCO crystallites with different texture. For the sample grown on YSZ, the rocking curve was fitted with two Gaussian functions, one corresponding to the YBCO layer (FWHM = 0.4°) and another to the substrate (FWHM = 0.3°). The magnetic measurements taken in zero field cooling and field cooling modes confirm the formation of the superconducting YBCO with critical temperatures (TC) 91.8 and 85.7 K for the samples grown onto YSZ and SrTiO3, respectively. The critical current density (JC) curves indirectly calculated by using the Bean´s model from the M(T) loops were JC ~ 109 A/cm2 for the sample deposited onto YSZ and JC ~ 107A/cm2 for the YBCO deposited onto SrTiO3. Overall, the difference in TC and JC values between both samples could be related to their difference in oxygen content, porosity, hole concentration per Cu ion and the presence of secondary phases.

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Texture and magnetic anisotropy of YBa2Cu3O7-x film on MgO substrate

Cited by 9 publications

References 27 publications

Structural and magnetic anisotropy in YBa$_2$Cu$_3$O$_7$/La$_{0.67}$Sr$_{0.33}$MnO$_3$ bilayer on SrTiO$_3$ substrate

Structural and magnetic anisotropy in YBa$_2$Cu$_3$O$_7$/La$_{0.67}$Sr$_{0.33}$MnO$_3$ bilayer on SrTiO$_3$ substrate

Aging and Environmental Effects on the Superconductor $$\left[{{\text{Y}}}_{1\;-\;x}{{\text{Ca}}}_{x}\right]{{\text{SrBaCu}}}_{2.80}{\left({{\text{BO}}}_{3}\right)}_{0.20}{{\text{O}}}_{y}$$ with $$0.10\;\le\;x\;\le\;0.50$$

YBa2Cu3O7 films grown onto SrTiO3 and YSZ substrates by chemical solution deposition of trifluoroacetates

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