Large magnetic entropy change in Dy1-xHoxNi 2B2C (x = 0-1) superconductors

Lingwei Li; Katsuhiko Nishimura; Dexuan Huo; Michiaki Kadonaga; Takahiro Namiki; Zhenghong Qian

doi:10.1143/APEX.4.093101

Large magnetic entropy change in Dy_1-xHo_xNi ₂B₂C (x = 0-1) superconductors

Lingwei Li^*, Katsuhiko Nishimura, Dexuan Huo, Michiaki Kadonaga, Takahiro Namiki, Zhenghong Qian

^*Corresponding author for this work

Materials Design and Engineering

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

51 Scopus citations

Abstract

The magnetocaloric effect in antiferromagnetic superconductors Dy _1-xHo_xNi₂B₂C (x = 0, 0.3, 0.5, 0.7, and 1) has been studied. The magnetic transition temperature TM as well as the temperature of the maximum magnetic entropy change (-ΔS_M ^max) gradually shift to low temperature with increasing x, while the values of -ΔS_M ^max remain at almost the same high value. The observed large magnetic entropy is related to a fieldinduced first-order metamagnetic transition from antiferromagnetic to ferromagnetic state. The large values of -ΔS_M and high relative cooling power with tuneable T_M indicate that Dy_1-xHo_xNi ₂B₂C could be used for low-temperature magnetic refrigeration.

Original language	English
Article number	093101
Journal	Applied Physics Express
Volume	4
Issue number	9
DOIs	https://doi.org/10.1143/APEX.4.093101
State	Published - 2011/09

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

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10.1143/APEX.4.093101

Cite this

@article{15f90a83be8f4dc8949dd87bd6b997c2,

title = "Large magnetic entropy change in Dy1-xHoxNi 2B2C (x = 0-1) superconductors",

abstract = "The magnetocaloric effect in antiferromagnetic superconductors Dy 1-xHoxNi2B2C (x = 0, 0.3, 0.5, 0.7, and 1) has been studied. The magnetic transition temperature TM as well as the temperature of the maximum magnetic entropy change (-ΔSM max) gradually shift to low temperature with increasing x, while the values of -ΔSM max remain at almost the same high value. The observed large magnetic entropy is related to a fieldinduced first-order metamagnetic transition from antiferromagnetic to ferromagnetic state. The large values of -ΔSM and high relative cooling power with tuneable TM indicate that Dy1-xHoxNi 2B2C could be used for low-temperature magnetic refrigeration.",

author = "Lingwei Li and Katsuhiko Nishimura and Dexuan Huo and Michiaki Kadonaga and Takahiro Namiki and Zhenghong Qian",

year = "2011",

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journal = "Applied Physics Express",

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T1 - Large magnetic entropy change in Dy1-xHoxNi 2B2C (x = 0-1) superconductors

AU - Li, Lingwei

AU - Nishimura, Katsuhiko

AU - Huo, Dexuan

AU - Kadonaga, Michiaki

AU - Namiki, Takahiro

AU - Qian, Zhenghong

PY - 2011/9

Y1 - 2011/9

N2 - The magnetocaloric effect in antiferromagnetic superconductors Dy 1-xHoxNi2B2C (x = 0, 0.3, 0.5, 0.7, and 1) has been studied. The magnetic transition temperature TM as well as the temperature of the maximum magnetic entropy change (-ΔSM max) gradually shift to low temperature with increasing x, while the values of -ΔSM max remain at almost the same high value. The observed large magnetic entropy is related to a fieldinduced first-order metamagnetic transition from antiferromagnetic to ferromagnetic state. The large values of -ΔSM and high relative cooling power with tuneable TM indicate that Dy1-xHoxNi 2B2C could be used for low-temperature magnetic refrigeration.

AB - The magnetocaloric effect in antiferromagnetic superconductors Dy 1-xHoxNi2B2C (x = 0, 0.3, 0.5, 0.7, and 1) has been studied. The magnetic transition temperature TM as well as the temperature of the maximum magnetic entropy change (-ΔSM max) gradually shift to low temperature with increasing x, while the values of -ΔSM max remain at almost the same high value. The observed large magnetic entropy is related to a fieldinduced first-order metamagnetic transition from antiferromagnetic to ferromagnetic state. The large values of -ΔSM and high relative cooling power with tuneable TM indicate that Dy1-xHoxNi 2B2C could be used for low-temperature magnetic refrigeration.

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