Observation of giant magnetocaloric effect under low magnetic fields in EuTi1-xcoxo3

Qi Lei Sun; Zhao Jun Mo; Jun Shen; Yu Jin Li; Lan Li; Jun Kai Zhang; Guo Dong Liu; Cheng Chun Tang; Fan Bin Meng

doi:10.1088/1674-1056/26/11/117501

Observation of giant magnetocaloric effect under low magnetic fields in EuTi_1-xco_xo₃

Qi Lei Sun, Zhao Jun Mo, Jun Shen, Yu Jin Li, Lan Li, Jun Kai Zhang, Guo Dong Liu, Cheng Chun Tang, Fan Bin Meng^*

^*Corresponding author for this work

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

2 Citations (Scopus)

Abstract

The magnetic properties and magnetocaloric effect (MCE) in EuTi_1-xCo_xO₃ (x = 0, 0.025, 0.05, 0.075, 0.1) compounds have been investigated. When the Ti⁴⁺ ions were substituted by Co²⁺ ions, the delicate balance was changed between antiferromagnetic (AFM) and ferromagnetic (FM) phases in the EuTi_1-xCo_xO₃compound. In EuTi_1-xCo_xO₃ system, a giant reversible MCE and large refrigerant capacity (RC) were observed without hysteresis. The values of -ΔS^max _M were evaluated to be around 10 J·kg¹·K^-1 for EuTi_0.95Co_0.05O₃ under a magnetic field change of 10 kOe. The giant reversible MCE and large RC suggests that EuTi_1-xCo_xO₃ series could be considered as good candidate materials for low-temperature and low-field magnetic refrigerant.

Original language	English
Article number	117501
Journal	Chinese Physics B
Volume	26
Issue number	11
DOIs	https://doi.org/10.1088/1674-1056/26/11/117501
Publication status	Published - Nov 2017
Externally published	Yes

Keywords

Magnetic entropy change
Magnetic phase transformation
Magnetocaloric effect

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10.1088/1674-1056/26/11/117501

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title = "Observation of giant magnetocaloric effect under low magnetic fields in EuTi1-xcoxo3",

abstract = "The magnetic properties and magnetocaloric effect (MCE) in EuTi1-xCoxO3 (x = 0, 0.025, 0.05, 0.075, 0.1) compounds have been investigated. When the Ti4+ ions were substituted by Co2+ ions, the delicate balance was changed between antiferromagnetic (AFM) and ferromagnetic (FM) phases in the EuTi1-xCoxO3compound. In EuTi1-xCoxO3 system, a giant reversible MCE and large refrigerant capacity (RC) were observed without hysteresis. The values of -ΔSmax M were evaluated to be around 10 J·kg1·K-1 for EuTi0.95Co0.05O3 under a magnetic field change of 10 kOe. The giant reversible MCE and large RC suggests that EuTi1-xCoxO3 series could be considered as good candidate materials for low-temperature and low-field magnetic refrigerant.",

keywords = "Magnetic entropy change, Magnetic phase transformation, Magnetocaloric effect",

author = "Sun, {Qi Lei} and Mo, {Zhao Jun} and Jun Shen and Li, {Yu Jin} and Lan Li and Zhang, {Jun Kai} and Liu, {Guo Dong} and Tang, {Cheng Chun} and Meng, {Fan Bin}",

note = "Publisher Copyright: {\textcopyright} 2017 Chinese Physical Society and IOP Publishing Ltd.",

year = "2017",

month = nov,

doi = "10.1088/1674-1056/26/11/117501",

language = "English",

volume = "26",

journal = "Chinese Physics B",

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TY - JOUR

T1 - Observation of giant magnetocaloric effect under low magnetic fields in EuTi1-xcoxo3

AU - Sun, Qi Lei

AU - Mo, Zhao Jun

AU - Shen, Jun

AU - Li, Yu Jin

AU - Li, Lan

AU - Zhang, Jun Kai

AU - Liu, Guo Dong

AU - Tang, Cheng Chun

AU - Meng, Fan Bin

PY - 2017/11

Y1 - 2017/11

N2 - The magnetic properties and magnetocaloric effect (MCE) in EuTi1-xCoxO3 (x = 0, 0.025, 0.05, 0.075, 0.1) compounds have been investigated. When the Ti4+ ions were substituted by Co2+ ions, the delicate balance was changed between antiferromagnetic (AFM) and ferromagnetic (FM) phases in the EuTi1-xCoxO3compound. In EuTi1-xCoxO3 system, a giant reversible MCE and large refrigerant capacity (RC) were observed without hysteresis. The values of -ΔSmax M were evaluated to be around 10 J·kg1·K-1 for EuTi0.95Co0.05O3 under a magnetic field change of 10 kOe. The giant reversible MCE and large RC suggests that EuTi1-xCoxO3 series could be considered as good candidate materials for low-temperature and low-field magnetic refrigerant.

AB - The magnetic properties and magnetocaloric effect (MCE) in EuTi1-xCoxO3 (x = 0, 0.025, 0.05, 0.075, 0.1) compounds have been investigated. When the Ti4+ ions were substituted by Co2+ ions, the delicate balance was changed between antiferromagnetic (AFM) and ferromagnetic (FM) phases in the EuTi1-xCoxO3compound. In EuTi1-xCoxO3 system, a giant reversible MCE and large refrigerant capacity (RC) were observed without hysteresis. The values of -ΔSmax M were evaluated to be around 10 J·kg1·K-1 for EuTi0.95Co0.05O3 under a magnetic field change of 10 kOe. The giant reversible MCE and large RC suggests that EuTi1-xCoxO3 series could be considered as good candidate materials for low-temperature and low-field magnetic refrigerant.

KW - Magnetic entropy change

KW - Magnetic phase transformation

KW - Magnetocaloric effect

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U2 - 10.1088/1674-1056/26/11/117501

DO - 10.1088/1674-1056/26/11/117501

M3 - Article

AN - SCOPUS:85033803955

SN - 1674-1056

VL - 26

JO - Chinese Physics B

JF - Chinese Physics B

IS - 11

M1 - 117501

ER -

Observation of giant magnetocaloric effect under low magnetic fields in EuTi_1-xco_xo₃

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Keywords

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