Low field flux dynamics of Pr-doped Bi-2212 single crystals

Y. Y. Hsu; Y. Huang; H. C. Ku

doi:10.1016/S0921-4534(00)00836-4

Low field flux dynamics of Pr-doped Bi-2212 single crystals

Y. Y. Hsu^*
, Y. Huang
, H. C. Ku

^*Corresponding author for this work

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

Abstract

Magnetic hysteresis M(H,T) and magnetic relaxation M(t) results on various Pr-doped single crystals Bi₂Sr₂Ca_1-x Pr_xCu₂O_8+δ are reported. Superconducting H-T phase diagram with applied field parallel to single crystal c-axis indicates that with progressive Pr doping from optimum composition (x = 0.11, T_c = 88 K) to underdoped single crystal (x > 0.11), all characteristic field lines in H-T diagram shift to lower reduced temperature T/T_c and lower field region with narrower second peak (H_2p) window. Low field magnetic relaxation data near H_2p indicates a distinct change of flux creep behavior from collective creep model for field smaller than second peak onset field (H_on) to vortex glass model for H > H_on. Such a crossover behavior implies a change in vortex coupling mechanism from vortex quasi-latrice to entangled vortex glass.

Original language	English
Pages (from-to)	1159-1160
Number of pages	2
Journal	Physica C: Superconductivity and its Applications
Volume	341-348
Issue number	PART 3
DOIs	https://doi.org/10.1016/S0921-4534(00)00836-4
Publication status	Published - 2000
Externally published	Yes

ASJC Scopus subject areas

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(00)00836-4

Cite this

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title = "Low field flux dynamics of Pr-doped Bi-2212 single crystals",

abstract = "Magnetic hysteresis M(H,T) and magnetic relaxation M(t) results on various Pr-doped single crystals Bi2Sr2Ca1-x PrxCu2O8+δ are reported. Superconducting H-T phase diagram with applied field parallel to single crystal c-axis indicates that with progressive Pr doping from optimum composition (x = 0.11, Tc = 88 K) to underdoped single crystal (x > 0.11), all characteristic field lines in H-T diagram shift to lower reduced temperature T/Tc and lower field region with narrower second peak (H2p) window. Low field magnetic relaxation data near H2p indicates a distinct change of flux creep behavior from collective creep model for field smaller than second peak onset field (Hon) to vortex glass model for H > Hon. Such a crossover behavior implies a change in vortex coupling mechanism from vortex quasi-latrice to entangled vortex glass.",

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year = "2000",

doi = "10.1016/S0921-4534(00)00836-4",

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T1 - Low field flux dynamics of Pr-doped Bi-2212 single crystals

AU - Hsu, Y. Y.

AU - Huang, Y.

AU - Ku, H. C.

PY - 2000

Y1 - 2000

N2 - Magnetic hysteresis M(H,T) and magnetic relaxation M(t) results on various Pr-doped single crystals Bi2Sr2Ca1-x PrxCu2O8+δ are reported. Superconducting H-T phase diagram with applied field parallel to single crystal c-axis indicates that with progressive Pr doping from optimum composition (x = 0.11, Tc = 88 K) to underdoped single crystal (x > 0.11), all characteristic field lines in H-T diagram shift to lower reduced temperature T/Tc and lower field region with narrower second peak (H2p) window. Low field magnetic relaxation data near H2p indicates a distinct change of flux creep behavior from collective creep model for field smaller than second peak onset field (Hon) to vortex glass model for H > Hon. Such a crossover behavior implies a change in vortex coupling mechanism from vortex quasi-latrice to entangled vortex glass.

AB - Magnetic hysteresis M(H,T) and magnetic relaxation M(t) results on various Pr-doped single crystals Bi2Sr2Ca1-x PrxCu2O8+δ are reported. Superconducting H-T phase diagram with applied field parallel to single crystal c-axis indicates that with progressive Pr doping from optimum composition (x = 0.11, Tc = 88 K) to underdoped single crystal (x > 0.11), all characteristic field lines in H-T diagram shift to lower reduced temperature T/Tc and lower field region with narrower second peak (H2p) window. Low field magnetic relaxation data near H2p indicates a distinct change of flux creep behavior from collective creep model for field smaller than second peak onset field (Hon) to vortex glass model for H > Hon. Such a crossover behavior implies a change in vortex coupling mechanism from vortex quasi-latrice to entangled vortex glass.

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JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - PART 3

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Low field flux dynamics of Pr-doped Bi-2212 single crystals

Abstract

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