Magnetization studies of K 0.8Fe 1.7Se 2 single crystals

I. Felner; S. Jin; G. Wang; S. Wang; K. Zhu; T. Zhou

doi:10.1007/s10948-011-1206-5

Magnetization studies of K _0.8Fe _1.7Se ₂ single crystals

I. Felner^*
, S. Jin
, G. Wang
, S. Wang
, K. Zhu
, T. Zhou

^*Corresponding author for this work

Racah Institute of Physics

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

1 Scopus citations

Abstract

Magnetization measurements of the magnetosuperconducting K _0.8Fe _1.7Se ₂ single crystals (TC = 29.6 K) at various applied fields and temperatures have been performed. In the superconducting range, two unusual phenomena are observed. (i) The presence of paramagnetic Meissner effect up to 20 Oe, which is revealed by the positive field-cooled magnetization curves. (ii) A double peak in the hysteresis loop at low temperatures. The isothermal magnetization measured at 35 K clearly indicates the presence of a tiny amount of a ferromagnetic substance (probably pure Fe). The two peculiar phenomena observed are attributed to this impurity.

Original language	English
Pages (from-to)	2033-2036
Number of pages	4
Journal	Journal of Superconductivity and Novel Magnetism
Volume	24
Issue number	7
DOIs	https://doi.org/10.1007/s10948-011-1206-5
State	Published - Oct 2011

Keywords

Fe-Se based materials
Paramagnetic Meissner effect
Superconductivity

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10.1007/s10948-011-1206-5

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abstract = "Magnetization measurements of the magnetosuperconducting K 0.8Fe 1.7Se 2 single crystals (TC = 29.6 K) at various applied fields and temperatures have been performed. In the superconducting range, two unusual phenomena are observed. (i) The presence of paramagnetic Meissner effect up to 20 Oe, which is revealed by the positive field-cooled magnetization curves. (ii) A double peak in the hysteresis loop at low temperatures. The isothermal magnetization measured at 35 K clearly indicates the presence of a tiny amount of a ferromagnetic substance (probably pure Fe). The two peculiar phenomena observed are attributed to this impurity.",

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AU - Felner, I.

AU - Jin, S.

AU - Wang, G.

AU - Wang, S.

AU - Zhu, K.

AU - Zhou, T.

PY - 2011/10

Y1 - 2011/10

N2 - Magnetization measurements of the magnetosuperconducting K 0.8Fe 1.7Se 2 single crystals (TC = 29.6 K) at various applied fields and temperatures have been performed. In the superconducting range, two unusual phenomena are observed. (i) The presence of paramagnetic Meissner effect up to 20 Oe, which is revealed by the positive field-cooled magnetization curves. (ii) A double peak in the hysteresis loop at low temperatures. The isothermal magnetization measured at 35 K clearly indicates the presence of a tiny amount of a ferromagnetic substance (probably pure Fe). The two peculiar phenomena observed are attributed to this impurity.

AB - Magnetization measurements of the magnetosuperconducting K 0.8Fe 1.7Se 2 single crystals (TC = 29.6 K) at various applied fields and temperatures have been performed. In the superconducting range, two unusual phenomena are observed. (i) The presence of paramagnetic Meissner effect up to 20 Oe, which is revealed by the positive field-cooled magnetization curves. (ii) A double peak in the hysteresis loop at low temperatures. The isothermal magnetization measured at 35 K clearly indicates the presence of a tiny amount of a ferromagnetic substance (probably pure Fe). The two peculiar phenomena observed are attributed to this impurity.

KW - Fe-Se based materials

KW - Paramagnetic Meissner effect

KW - Superconductivity

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JF - Journal of Superconductivity and Novel Magnetism

IS - 7

ER -

Magnetization studies of K _0.8Fe _1.7Se ₂ single crystals

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