The magnetization of PrFeAsO0.60F0.12 superconductor

D. Bhoi; P. Mandal; P. Choudhury; S. Dash; A. Banerjee

doi:10.1016/j.physc.2011.02.004

The magnetization of PrFeAsO_0.60F_0.12 superconductor

D. Bhoi, P. Mandal, P. Choudhury, S. Dash, A. Banerjee

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

12 Scopus citations

Abstract

The magnetization of the PrFeAsO_0.60F_0.12 polycrystalline sample has been measured as functions of temperature and magnetic field (H). The observed total magnetization is the sum of a superconducting irreversible magnetization and a paramagnetic magnetization. Analysis of dc susceptibility χ(T) in the normal state shows that the paramagnetic component of magnetization comes from the Pr³⁺ magnetic moments. The intragrain critical current density (J_L) derived from the magnetization data is large. The J_L(H) curve displays a second peak which shifts towards the high-field region with decreasing temperature. In the low-field region, a plateau up to a field H^- followed by a power law H^-5/8 behavior of J_L(H) is the characteristic of the strong pinning. A vortex phase diagram for the present superconductor has been obtained from the magnetization and resistivity data.

Original language	English
Pages (from-to)	258-264
Number of pages	7
Journal	Physica C: Superconductivity and its Applications
Volume	471
Issue number	7-8
DOIs	https://doi.org/10.1016/j.physc.2011.02.004
State	Published - Apr 2011
Externally published	Yes

Funding

The authors would like to thank A. Pal and S. Banerjee for technical help during sample preparation and measurements. A. Banerjee would also like to thank DST, India for financial assistance for the 14 T vibrating sample magnetometer facility at CSR, Indore.

Keywords

Critical current density
Magnetization hysteresis
Pnictide
Strong pinning

Access to Document

10.1016/j.physc.2011.02.004

Cite this

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title = "The magnetization of PrFeAsO0.60F0.12 superconductor",

abstract = "The magnetization of the PrFeAsO0.60F0.12 polycrystalline sample has been measured as functions of temperature and magnetic field (H). The observed total magnetization is the sum of a superconducting irreversible magnetization and a paramagnetic magnetization. Analysis of dc susceptibility χ(T) in the normal state shows that the paramagnetic component of magnetization comes from the Pr3+ magnetic moments. The intragrain critical current density (JL) derived from the magnetization data is large. The JL(H) curve displays a second peak which shifts towards the high-field region with decreasing temperature. In the low-field region, a plateau up to a field H- followed by a power law H-5/8 behavior of JL(H) is the characteristic of the strong pinning. A vortex phase diagram for the present superconductor has been obtained from the magnetization and resistivity data.",

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author = "D. Bhoi and P. Mandal and P. Choudhury and S. Dash and A. Banerjee",

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T1 - The magnetization of PrFeAsO0.60F0.12 superconductor

AU - Bhoi, D.

AU - Mandal, P.

AU - Choudhury, P.

AU - Dash, S.

AU - Banerjee, A.

PY - 2011/4

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N2 - The magnetization of the PrFeAsO0.60F0.12 polycrystalline sample has been measured as functions of temperature and magnetic field (H). The observed total magnetization is the sum of a superconducting irreversible magnetization and a paramagnetic magnetization. Analysis of dc susceptibility χ(T) in the normal state shows that the paramagnetic component of magnetization comes from the Pr3+ magnetic moments. The intragrain critical current density (JL) derived from the magnetization data is large. The JL(H) curve displays a second peak which shifts towards the high-field region with decreasing temperature. In the low-field region, a plateau up to a field H- followed by a power law H-5/8 behavior of JL(H) is the characteristic of the strong pinning. A vortex phase diagram for the present superconductor has been obtained from the magnetization and resistivity data.

AB - The magnetization of the PrFeAsO0.60F0.12 polycrystalline sample has been measured as functions of temperature and magnetic field (H). The observed total magnetization is the sum of a superconducting irreversible magnetization and a paramagnetic magnetization. Analysis of dc susceptibility χ(T) in the normal state shows that the paramagnetic component of magnetization comes from the Pr3+ magnetic moments. The intragrain critical current density (JL) derived from the magnetization data is large. The JL(H) curve displays a second peak which shifts towards the high-field region with decreasing temperature. In the low-field region, a plateau up to a field H- followed by a power law H-5/8 behavior of JL(H) is the characteristic of the strong pinning. A vortex phase diagram for the present superconductor has been obtained from the magnetization and resistivity data.

KW - Critical current density

KW - Magnetization hysteresis

KW - Pnictide

KW - Strong pinning

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