Granularity and intragrain penetration depth in RuSr2GdCu2O8

Y. Y. Xue; B. Lorenz; R. L. Meng; A. Baikalove; C. W. Chu

doi:10.1016/S0921-4534(01)00765-1

Granularity and intragrain penetration depth in RuSr₂GdCu₂O₈

Y. Y. Xue
, B. Lorenz
, R. L. Meng
, A. Baikalove
, C. W. Chu

Executive Vice President

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

The multi-stage transition of RuSr₂GdCu₂O₈ (Ru1212) ceramic samples was investigated. An intergrain phase-lock temperature of T₂ is identified around 10-30 K. Slightly above T₂, however, an isolated Ru1212 grain still behaves as a Josephson-junction array of superconductive nano-domains, which are phase-locked below an interdomain phase-lock temperature (intragrain transition-temperature) of T₁ ≈ 33-40 K. The intragrain penetration depth λ₁ was subsequently deduced from the ac susceptibility χ′ of powders with different particle-size d (0.3≤d≤10 μm in this work) between T₁ and T₂. The sample-dependent λ₁ ≈ 2.5-6 μm so obtained is extremely long, and bears a systematic correlation with the T₁ observed. A phase-separation model was proposed to interpret the data.

Original language	English
Pages (from-to)	251-253
Number of pages	3
Journal	Physica C: Superconductivity and its Applications
Volume	364-365
DOIs	https://doi.org/10.1016/S0921-4534(01)00765-1
Publication status	Published - 2001 Nov

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/S0921-4534(01)00765-1

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title = "Granularity and intragrain penetration depth in RuSr2GdCu2O8",

abstract = "The multi-stage transition of RuSr2GdCu2O8 (Ru1212) ceramic samples was investigated. An intergrain phase-lock temperature of T2 is identified around 10-30 K. Slightly above T2, however, an isolated Ru1212 grain still behaves as a Josephson-junction array of superconductive nano-domains, which are phase-locked below an interdomain phase-lock temperature (intragrain transition-temperature) of T1 ≈ 33-40 K. The intragrain penetration depth λ1 was subsequently deduced from the ac susceptibility χ′ of powders with different particle-size d (0.3≤d≤10 μm in this work) between T1 and T2. The sample-dependent λ1 ≈ 2.5-6 μm so obtained is extremely long, and bears a systematic correlation with the T1 observed. A phase-separation model was proposed to interpret the data.",

author = "Xue, \{Y. Y.\} and B. Lorenz and Meng, \{R. L.\} and A. Baikalove and Chu, \{C. W.\}",

note = "Funding Information: This work is supported in part by the State of Texas through TCSUH, NSF, the T. L. L. Temple Foundation, the John and Rebecca Moores Endowment and DOE through LBNL. ",

year = "2001",

month = nov,

doi = "10.1016/S0921-4534(01)00765-1",

language = "English",

volume = "364-365",

pages = "251--253",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

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TY - JOUR

T1 - Granularity and intragrain penetration depth in RuSr2GdCu2O8

AU - Xue, Y. Y.

AU - Lorenz, B.

AU - Meng, R. L.

AU - Baikalove, A.

AU - Chu, C. W.

N1 - Funding Information: This work is supported in part by the State of Texas through TCSUH, NSF, the T. L. L. Temple Foundation, the John and Rebecca Moores Endowment and DOE through LBNL.

PY - 2001/11

Y1 - 2001/11

N2 - The multi-stage transition of RuSr2GdCu2O8 (Ru1212) ceramic samples was investigated. An intergrain phase-lock temperature of T2 is identified around 10-30 K. Slightly above T2, however, an isolated Ru1212 grain still behaves as a Josephson-junction array of superconductive nano-domains, which are phase-locked below an interdomain phase-lock temperature (intragrain transition-temperature) of T1 ≈ 33-40 K. The intragrain penetration depth λ1 was subsequently deduced from the ac susceptibility χ′ of powders with different particle-size d (0.3≤d≤10 μm in this work) between T1 and T2. The sample-dependent λ1 ≈ 2.5-6 μm so obtained is extremely long, and bears a systematic correlation with the T1 observed. A phase-separation model was proposed to interpret the data.

AB - The multi-stage transition of RuSr2GdCu2O8 (Ru1212) ceramic samples was investigated. An intergrain phase-lock temperature of T2 is identified around 10-30 K. Slightly above T2, however, an isolated Ru1212 grain still behaves as a Josephson-junction array of superconductive nano-domains, which are phase-locked below an interdomain phase-lock temperature (intragrain transition-temperature) of T1 ≈ 33-40 K. The intragrain penetration depth λ1 was subsequently deduced from the ac susceptibility χ′ of powders with different particle-size d (0.3≤d≤10 μm in this work) between T1 and T2. The sample-dependent λ1 ≈ 2.5-6 μm so obtained is extremely long, and bears a systematic correlation with the T1 observed. A phase-separation model was proposed to interpret the data.

UR - https://www.scopus.com/pages/publications/0035499547

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U2 - 10.1016/S0921-4534(01)00765-1

DO - 10.1016/S0921-4534(01)00765-1

M3 - Article

AN - SCOPUS:0035499547

SN - 0921-4534

VL - 364-365

SP - 251

EP - 253

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

ER -

Granularity and intragrain penetration depth in RuSr₂GdCu₂O₈

Abstract

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