YBa2Cu3O7-x ceramic mixed-state field detected by an acoustic emission method

E. Dul'kin; M. Roth

doi:10.1088/0953-2048/16/3/307

YBa₂Cu₃O_7-x ceramic mixed-state field detected by an acoustic emission method

E. Dul'kin^*
, M. Roth

^*Corresponding author for this work

The Institute of Applied Physics

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

5 Scopus citations

Abstract

We studied YBa₂Cu₃O_7-x ceramic samples during external magnetic field increase from 200 to 4000 Oe at 77 K using acoustic emission and magnetization methods. We observed a small magnetic anomaly near 2500 Oe. This observed magnetic anomaly was accompanied by acoustic emission impulses of activity Ṅ equal to ∼20 s^-1. These impulses are thought to be Bean's mixed-state field H_s. Based on Bean's theory, the full penetration field H* has been calculated to be ∼1200 Oe. The possible mechanism of acoustic emission signals due to interaction between flux lines during the formation of a mixed state inside a sample is discussed.

Original language	English
Pages (from-to)	361-363
Number of pages	3
Journal	Superconductor Science and Technology
Volume	16
Issue number	3
DOIs	https://doi.org/10.1088/0953-2048/16/3/307
State	Published - Mar 2003

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title = "YBa2Cu3O7-x ceramic mixed-state field detected by an acoustic emission method",

abstract = "We studied YBa2Cu3O7-x ceramic samples during external magnetic field increase from 200 to 4000 Oe at 77 K using acoustic emission and magnetization methods. We observed a small magnetic anomaly near 2500 Oe. This observed magnetic anomaly was accompanied by acoustic emission impulses of activity Ṅ equal to ∼20 s-1. These impulses are thought to be Bean's mixed-state field Hs. Based on Bean's theory, the full penetration field H* has been calculated to be ∼1200 Oe. The possible mechanism of acoustic emission signals due to interaction between flux lines during the formation of a mixed state inside a sample is discussed.",

author = "E. Dul'kin and M. Roth",

year = "2003",

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AU - Roth, M.

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N2 - We studied YBa2Cu3O7-x ceramic samples during external magnetic field increase from 200 to 4000 Oe at 77 K using acoustic emission and magnetization methods. We observed a small magnetic anomaly near 2500 Oe. This observed magnetic anomaly was accompanied by acoustic emission impulses of activity Ṅ equal to ∼20 s-1. These impulses are thought to be Bean's mixed-state field Hs. Based on Bean's theory, the full penetration field H* has been calculated to be ∼1200 Oe. The possible mechanism of acoustic emission signals due to interaction between flux lines during the formation of a mixed state inside a sample is discussed.

AB - We studied YBa2Cu3O7-x ceramic samples during external magnetic field increase from 200 to 4000 Oe at 77 K using acoustic emission and magnetization methods. We observed a small magnetic anomaly near 2500 Oe. This observed magnetic anomaly was accompanied by acoustic emission impulses of activity Ṅ equal to ∼20 s-1. These impulses are thought to be Bean's mixed-state field Hs. Based on Bean's theory, the full penetration field H* has been calculated to be ∼1200 Oe. The possible mechanism of acoustic emission signals due to interaction between flux lines during the formation of a mixed state inside a sample is discussed.

UR - https://www.scopus.com/pages/publications/0037344087

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JO - Superconductor Science and Technology

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IS - 3

ER -

YBa₂Cu₃O_7-x ceramic mixed-state field detected by an acoustic emission method

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