On the possible separation of the phase enriched with Nb in superconducting intermetallic Nb3Sn irradiated with fast protons


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Abstract

The results of the study of magnetization and dynamic magnetic susceptibility are correlated with changes in the microstructure of superconducting intermetallic Nb3Sn plates irradiated at the Kurchatov Institute cyclotron with fast protons with an energy of 12.8 MeV to a fluence of 1 · 1018 cm−2. The dependence of the superconducting transition temperature on the total irradiation dose is determined. For one of the samples, the dynamic magnetic susceptibility exhibits several steps corresponding to superconducting transitions at different temperatures. It is assumed that a Nb-enriched phase is separated in the region of maximum radiation damages. A microstructural analysis shows the appearance of randomly oriented Nb-enriched regions from 0.1 to 0.5 μm in size.

About the authors

A. L. Vasil’ev

Russian Scientific Center “Kurchatov Institute”

Email: degtyarenkopn@gmail.com
Russian Federation, pl. Kurchatova 1, Moscow, 123182

A. Ballarino

CERN

Email: degtyarenkopn@gmail.com
Switzerland, Geneva 23, CH-1211

L. Bottura

CERN

Email: degtyarenkopn@gmail.com
Switzerland, Geneva 23, CH-1211

S. Yu. Gavrilkin

Lebedev Physical Institute

Email: degtyarenkopn@gmail.com
Russian Federation, Leninskii pr. 53, Moscow, 119991

P. N. Degtyarenko

Russian Scientific Center “Kurchatov Institute”; Joint Institute for High Temperatures

Author for correspondence.
Email: degtyarenkopn@gmail.com
Russian Federation, pl. Kurchatova 1, Moscow, 123182; Izhorskaya ul. 13, Bd. 2, Moscow, 125412

I. A. Karateev

Russian Scientific Center “Kurchatov Institute”

Email: degtyarenkopn@gmail.com
Russian Federation, pl. Kurchatova 1, Moscow, 123182

V. S. Kruglov

Russian Scientific Center “Kurchatov Institute”; National Research Nuclear University “MEPhI”

Email: degtyarenkopn@gmail.com
Russian Federation, pl. Kurchatova 1, Moscow, 123182; Kashirskoe sh. 31, Moscow, 115409

S. T. Latushkin

Russian Scientific Center “Kurchatov Institute”

Email: degtyarenkopn@gmail.com
Russian Federation, pl. Kurchatova 1, Moscow, 123182

A. V. Lunev

Russian Scientific Center “Kurchatov Institute”

Email: degtyarenkopn@gmail.com
Russian Federation, pl. Kurchatova 1, Moscow, 123182

A. I. Ryazanov

Russian Scientific Center “Kurchatov Institute”; National Research Nuclear University “MEPhI”

Email: degtyarenkopn@gmail.com
Russian Federation, pl. Kurchatova 1, Moscow, 123182; Kashirskoe sh. 31, Moscow, 115409

E. V. Semenov

Russian Scientific Center “Kurchatov Institute”

Email: degtyarenkopn@gmail.com
Russian Federation, pl. Kurchatova 1, Moscow, 123182

V. N. Unezhev

Russian Scientific Center “Kurchatov Institute”

Email: degtyarenkopn@gmail.com
Russian Federation, pl. Kurchatova 1, Moscow, 123182

R. Flükiger

CERN; Laboratory of Crystallography

Email: degtyarenkopn@gmail.com
Switzerland, Geneva 23, CH-1211; Geneva 4, CH-1211

S. V. Shavkin

Russian Scientific Center “Kurchatov Institute”

Email: degtyarenkopn@gmail.com
Russian Federation, pl. Kurchatova 1, Moscow, 123182

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