A giant magnetocaloric effect in EuTi0.875Mn0.125O3 compound

Zhao Jun Mo; Qi Lei Sun; Jun Shen; Chang Hong Wang; Fan Bin Meng; Mo Han Zhang; Ying Huo; Lan Li; Guo Dong Liu

doi:10.1016/j.jallcom.2018.03.247

A giant magnetocaloric effect in EuTi_0.875Mn_0.125O₃ compound

Zhao Jun Mo^*, Qi Lei Sun, Jun Shen, Chang Hong Wang, Fan Bin Meng, Mo Han Zhang, Ying Huo, Lan Li, Guo Dong Liu

^*Corresponding author for this work

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

14 Citations (Scopus)

Abstract

The magnetic properties and magnetocaloric effect of EuTi_0.875Mn_0.125O₃ compounds are investigated. EuTi_0.875Mn_0.125O₃ compounds show the ferromagnetic to paramagnetic magnetic transition at T_c = 5.5 K. There are 15.48% Eu²⁺ ions that change into Eu³⁺, because the concentrations of Mn²⁺ and Mn⁴⁺ are 7.74% and 4.76% in the EuTi_0.875Mn_0.125O₃ compounds. Although, the magnetic moments were decreased, the utilization of spin entropy of Eu²⁺: 4f⁷ localized moments was improved. A giant reversible magnetocaloric effect was observed in EuTi_0.875Mn_0.125O₃ compounds. The maximum value of magnetic entropy change are (12.3 and 23.3 J/kg K), and the values of RC were evaluated to be 46 and 123 J/kg for a field change of 1 and 2 T, without thermal and field hysteresis loss. Therefore, the giant reversible MCE and large RC make the EuTi_0.875Mn_0.125O₃ compound a good candidate for magnetic refrigerant working at low-temperature and low-field.

Original language	English
Pages (from-to)	1-5
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	753
DOIs	https://doi.org/10.1016/j.jallcom.2018.03.247
Publication status	Published - 15 Jul 2018
Externally published	Yes

Keywords

Magnetic entropy change
Magnetocaloric effect
Refrigerant capacity

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10.1016/j.jallcom.2018.03.247

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@article{eede6308854f43dda50e9950bd33c61a,

title = "A giant magnetocaloric effect in EuTi0.875Mn0.125O3 compound",

abstract = "The magnetic properties and magnetocaloric effect of EuTi0.875Mn0.125O3 compounds are investigated. EuTi0.875Mn0.125O3 compounds show the ferromagnetic to paramagnetic magnetic transition at Tc = 5.5 K. There are 15.48\% Eu2+ ions that change into Eu3+, because the concentrations of Mn2+ and Mn4+ are 7.74\% and 4.76\% in the EuTi0.875Mn0.125O3 compounds. Although, the magnetic moments were decreased, the utilization of spin entropy of Eu2+: 4f7 localized moments was improved. A giant reversible magnetocaloric effect was observed in EuTi0.875Mn0.125O3 compounds. The maximum value of magnetic entropy change are (12.3 and 23.3 J/kg K), and the values of RC were evaluated to be 46 and 123 J/kg for a field change of 1 and 2 T, without thermal and field hysteresis loss. Therefore, the giant reversible MCE and large RC make the EuTi0.875Mn0.125O3 compound a good candidate for magnetic refrigerant working at low-temperature and low-field.",

keywords = "Magnetic entropy change, Magnetocaloric effect, Refrigerant capacity",

author = "Mo, \{Zhao Jun\} and Sun, \{Qi Lei\} and Jun Shen and Wang, \{Chang Hong\} and Meng, \{Fan Bin\} and Zhang, \{Mo Han\} and Ying Huo and Lan Li and Liu, \{Guo Dong\}",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

month = jul,

day = "15",

doi = "10.1016/j.jallcom.2018.03.247",

language = "English",

volume = "753",

pages = "1--5",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - A giant magnetocaloric effect in EuTi0.875Mn0.125O3 compound

AU - Mo, Zhao Jun

AU - Sun, Qi Lei

AU - Shen, Jun

AU - Wang, Chang Hong

AU - Meng, Fan Bin

AU - Zhang, Mo Han

AU - Huo, Ying

AU - Li, Lan

AU - Liu, Guo Dong

PY - 2018/7/15

Y1 - 2018/7/15

N2 - The magnetic properties and magnetocaloric effect of EuTi0.875Mn0.125O3 compounds are investigated. EuTi0.875Mn0.125O3 compounds show the ferromagnetic to paramagnetic magnetic transition at Tc = 5.5 K. There are 15.48% Eu2+ ions that change into Eu3+, because the concentrations of Mn2+ and Mn4+ are 7.74% and 4.76% in the EuTi0.875Mn0.125O3 compounds. Although, the magnetic moments were decreased, the utilization of spin entropy of Eu2+: 4f7 localized moments was improved. A giant reversible magnetocaloric effect was observed in EuTi0.875Mn0.125O3 compounds. The maximum value of magnetic entropy change are (12.3 and 23.3 J/kg K), and the values of RC were evaluated to be 46 and 123 J/kg for a field change of 1 and 2 T, without thermal and field hysteresis loss. Therefore, the giant reversible MCE and large RC make the EuTi0.875Mn0.125O3 compound a good candidate for magnetic refrigerant working at low-temperature and low-field.

AB - The magnetic properties and magnetocaloric effect of EuTi0.875Mn0.125O3 compounds are investigated. EuTi0.875Mn0.125O3 compounds show the ferromagnetic to paramagnetic magnetic transition at Tc = 5.5 K. There are 15.48% Eu2+ ions that change into Eu3+, because the concentrations of Mn2+ and Mn4+ are 7.74% and 4.76% in the EuTi0.875Mn0.125O3 compounds. Although, the magnetic moments were decreased, the utilization of spin entropy of Eu2+: 4f7 localized moments was improved. A giant reversible magnetocaloric effect was observed in EuTi0.875Mn0.125O3 compounds. The maximum value of magnetic entropy change are (12.3 and 23.3 J/kg K), and the values of RC were evaluated to be 46 and 123 J/kg for a field change of 1 and 2 T, without thermal and field hysteresis loss. Therefore, the giant reversible MCE and large RC make the EuTi0.875Mn0.125O3 compound a good candidate for magnetic refrigerant working at low-temperature and low-field.

KW - Magnetic entropy change

KW - Magnetocaloric effect

KW - Refrigerant capacity

UR - https://www.scopus.com/pages/publications/85045709933

U2 - 10.1016/j.jallcom.2018.03.247

DO - 10.1016/j.jallcom.2018.03.247

M3 - Article

AN - SCOPUS:85045709933

SN - 0925-8388

VL - 753

SP - 1

EP - 5

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

A giant magnetocaloric effect in EuTi_0.875Mn_0.125O₃ compound

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Keywords

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