Magnetocalorific effect in amorphous and partially-crystallized Fe-Zr-Nb-Cu-B alloy

J. Gondro; K. Bloch; M. Nabiałek; Simon Walters

doi:10.12693/APhysPolA.127.606

Magnetocalorific effect in amorphous and partially-crystallized Fe-Zr-Nb-Cu-B alloy

J. Gondro
, K. Bloch
, M. Nabiałek
, Simon Walters

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

Abstract

This paper presents the results of an investigation into the: microstructure, magnetic properties and influence of annealing temperature on the magnetocaloric effect of Fe82Zr7Nb2Cu1B8 alloy in the as-quenched and partially crystalline state. The microstructure was investigated using Mössbauer spectroscopy. The magnetocaloric effect was observed as a change in the magnetic entropy, which was calculated from isothermal magnetization curves. Fullyamorphous Fe82Zr7Nb2Cu1B8 alloys, in the as-quenched state, exhibit a Curie temperature equal to (340±5) K. The transmission Mössbauer spectrum for the as-quenched Fe82Zr7Nb2Cu1B8 alloy is typical for weak ferromagnets with the average hyperfine field of 9.86(2) T. For this alloy in the as-quenched state, the changes in maximum magnetic entropy occur near the Curie points and are equal to 0.95 J/(kg K). Also, the maximum magnetic entropy changes decrease after partial crystallization.

Original language	English
Pages (from-to)	606-607
Number of pages	2
Journal	Acta Physica Polonica A
Volume	127
Issue number	2
DOIs	https://doi.org/10.12693/APhysPolA.127.606
Publication status	Published - 1 Jan 2015

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title = "Magnetocalorific effect in amorphous and partially-crystallized Fe-Zr-Nb-Cu-B alloy",

abstract = "This paper presents the results of an investigation into the: microstructure, magnetic properties and influence of annealing temperature on the magnetocaloric effect of Fe82Zr7Nb2Cu1B8 alloy in the as-quenched and partially crystalline state. The microstructure was investigated using M{\"o}ssbauer spectroscopy. The magnetocaloric effect was observed as a change in the magnetic entropy, which was calculated from isothermal magnetization curves. Fullyamorphous Fe82Zr7Nb2Cu1B8 alloys, in the as-quenched state, exhibit a Curie temperature equal to (340±5) K. The transmission M{\"o}ssbauer spectrum for the as-quenched Fe82Zr7Nb2Cu1B8 alloy is typical for weak ferromagnets with the average hyperfine field of 9.86(2) T. For this alloy in the as-quenched state, the changes in maximum magnetic entropy occur near the Curie points and are equal to 0.95 J/(kg K). Also, the maximum magnetic entropy changes decrease after partial crystallization.",

author = "J. Gondro and K. Bloch and M. Nabia{\l}ek and Simon Walters",

year = "2015",

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doi = "10.12693/APhysPolA.127.606",

language = "English",

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TY - JOUR

T1 - Magnetocalorific effect in amorphous and partially-crystallized Fe-Zr-Nb-Cu-B alloy

AU - Gondro, J.

AU - Bloch, K.

AU - Nabiałek, M.

AU - Walters, Simon

PY - 2015/1/1

Y1 - 2015/1/1

N2 - This paper presents the results of an investigation into the: microstructure, magnetic properties and influence of annealing temperature on the magnetocaloric effect of Fe82Zr7Nb2Cu1B8 alloy in the as-quenched and partially crystalline state. The microstructure was investigated using Mössbauer spectroscopy. The magnetocaloric effect was observed as a change in the magnetic entropy, which was calculated from isothermal magnetization curves. Fullyamorphous Fe82Zr7Nb2Cu1B8 alloys, in the as-quenched state, exhibit a Curie temperature equal to (340±5) K. The transmission Mössbauer spectrum for the as-quenched Fe82Zr7Nb2Cu1B8 alloy is typical for weak ferromagnets with the average hyperfine field of 9.86(2) T. For this alloy in the as-quenched state, the changes in maximum magnetic entropy occur near the Curie points and are equal to 0.95 J/(kg K). Also, the maximum magnetic entropy changes decrease after partial crystallization.

AB - This paper presents the results of an investigation into the: microstructure, magnetic properties and influence of annealing temperature on the magnetocaloric effect of Fe82Zr7Nb2Cu1B8 alloy in the as-quenched and partially crystalline state. The microstructure was investigated using Mössbauer spectroscopy. The magnetocaloric effect was observed as a change in the magnetic entropy, which was calculated from isothermal magnetization curves. Fullyamorphous Fe82Zr7Nb2Cu1B8 alloys, in the as-quenched state, exhibit a Curie temperature equal to (340±5) K. The transmission Mössbauer spectrum for the as-quenched Fe82Zr7Nb2Cu1B8 alloy is typical for weak ferromagnets with the average hyperfine field of 9.86(2) T. For this alloy in the as-quenched state, the changes in maximum magnetic entropy occur near the Curie points and are equal to 0.95 J/(kg K). Also, the maximum magnetic entropy changes decrease after partial crystallization.

U2 - 10.12693/APhysPolA.127.606

DO - 10.12693/APhysPolA.127.606

M3 - Article

SN - 0587-4246

VL - 127

SP - 606

EP - 607

JO - Acta Physica Polonica A

JF - Acta Physica Polonica A

IS - 2

ER -

Magnetocalorific effect in amorphous and partially-crystallized Fe-Zr-Nb-Cu-B alloy

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