Correlation between structural and superconducting properties of thin films of YBa2Cu3O7-x by pulsed laser and chemical deposition methods

Schieber, M.; Ariel, Yaakov; Raizman, A.; Rotter, S.

doi:10.1016/0964-1807(93)90292-a

Cited by 3 publications

(1 citation statement)

References 12 publications

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“…However, an unreported feature (although discernible in data reported in [17]) is the RS minimum occurring near n = 3%. Obviously, the large increase in RS for larger values of n is directly related to an increase in HAGB density and can be interpreted by adding an additional tern in the Hylton model [18] in order to account for this specific type of defects [9].…”

Section: Rs and Microstructure: Hagb Densitymentioning

confidence: 93%

Growth of Laser Ablated YBa₂Cu₃O₇Thin Films Epitaxied on (100)MgO: Influence of In-Plane Misorientations on Low and High Frequency Properties

1997

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Tle graphoepitaxial growth of c-axis YΒa2Cu3O7 laser ablated thin films on (100)MgO induces a competition between two main in-plane orientations due to the large lattice mismatch: (100) YΒa2Cu3O7 || (100) MgO, c10 notation or (I 10) YΒa2 Cu3O7 || (100) MgO, c145 notation. The ratio of c┴45 /c┴0 in-plane orientations (η), measured by X-ray diffraction φ scans, is ranging from 0.2% to 49.7% for the films reported here. Their crystalline qualities were compared on the basis of rocking curves (Δθ), electron channelinng patterns and reflection high energy electron diffraction diagrams. The coexistence of c┴ 0 a n d G 1 4 5 d o m a i n s c r e a t e s h i g h a n g l e g r a i n b o u n d a r i e s . N o degradation of Τc , residual resistance ratio (RRR) or ΔTc is observed when η increases. In contrast, a strong correlation between microwave losses characterized by surface resistance (Rs at 10 GHz and 77 K), inductive losses S(χ") (surface of the χ" peak obtained in a.c. susccptibility at 119 Hz) and η was clearly evidenced. A minimum of losses was found for η between 3 and 6% suggesting the necessity of a low quantity of high angle grain boundaries for films optimization. Finally, some specific processes carried out recently in order to try to efficiently control η, then Rs are discussed.PACS numbers: 68.55. Jk, 73.25.+i 1. Introduction The control of the growtl of ligl quality epitaxial thin fllms of HTSC materials opens the way to a number of applications, specially in the field of microwave devices. however, working at high frequencies implies additional requirements on the dielectric properties of the substrates and, in this aspect, (100)MgO single crystal is one of the most popular. Unfortnnately, this material presents an important misfit with HTSC, meaning severe limitations in the mechanism of heteroepitaxial growth. In this paper, we will focus on the growth of YΒa2Cu3O7 (YBCO) on (100)MgO using pulsed laser deposition, thc specific defects of such films and their implication on the surface resistance RS wlich is the pertinent parameter for any microwave applications.

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Section: Rs and Microstructure: Hagb Densitymentioning

confidence: 93%

Growth of Laser Ablated YBa₂Cu₃O₇Thin Films Epitaxied on (100)MgO: Influence of In-Plane Misorientations on Low and High Frequency Properties

1997

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Effects of in-plane high angle grain boundaries in YBa2Cu3O7 thin films epitaxially grown on (100) MgO on their physical properties

Castel

Guilloux‐Viry

Padiou

et al. 1997

Journal of Alloys and Compounds

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X-ray diffraction studies elucidating high temperature superconducting properties of YBa₂Cu₃O_7−x thin films

1994

Zeitschrift Für Kristallographie - Crystalline Materials

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Correlation between structural and superconducting properties of thin films of YBa2Cu3O7-x by pulsed laser and chemical deposition methods

Cited by 3 publications

References 12 publications

Growth of Laser Ablated YBa₂Cu₃O₇Thin Films Epitaxied on (100)MgO: Influence of In-Plane Misorientations on Low and High Frequency Properties

Growth of Laser Ablated YBa₂Cu₃O₇Thin Films Epitaxied on (100)MgO: Influence of In-Plane Misorientations on Low and High Frequency Properties

Effects of in-plane high angle grain boundaries in YBa2Cu3O7 thin films epitaxially grown on (100) MgO on their physical properties

X-ray diffraction studies elucidating high temperature superconducting properties of YBa₂Cu₃O_7−x thin films

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Correlation between structural and superconducting properties of thin films of YBa2Cu3O7-x by pulsed laser and chemical deposition methods

Cited by 3 publications

References 12 publications

Growth of Laser Ablated YBa2Cu3O7Thin Films Epitaxied on (100)MgO: Influence of In-Plane Misorientations on Low and High Frequency Properties

Growth of Laser Ablated YBa2Cu3O7Thin Films Epitaxied on (100)MgO: Influence of In-Plane Misorientations on Low and High Frequency Properties

Effects of in-plane high angle grain boundaries in YBa2Cu3O7 thin films epitaxially grown on (100) MgO on their physical properties

X-ray diffraction studies elucidating high temperature superconducting properties of YBa2Cu3O7−x thin films

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Growth of Laser Ablated YBa₂Cu₃O₇Thin Films Epitaxied on (100)MgO: Influence of In-Plane Misorientations on Low and High Frequency Properties

Growth of Laser Ablated YBa₂Cu₃O₇Thin Films Epitaxied on (100)MgO: Influence of In-Plane Misorientations on Low and High Frequency Properties

X-ray diffraction studies elucidating high temperature superconducting properties of YBa₂Cu₃O_7−x thin films