Magnetic properties and magnetic entropy changes of La1-xPr xFe11.5Si1.5 compounds with 0 ≤ x ≤ 0.5

Jun Shen; Bo Gao; Li Qin Yan; Yang Xian Li; Hong Wei Zhang; Feng Xia Hu; Ji Rong Sun

doi:10.1088/1009-1963/16/12/049

Magnetic properties and magnetic entropy changes of La_1-xPr _xFe_11.5Si_1.5 compounds with 0 ≤ x ≤ 0.5

Jun Shen^*, Bo Gao, Li Qin Yan, Yang Xian Li, Hong Wei Zhang, Feng Xia Hu, Ji Rong Sun

^*Corresponding author for this work

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

27 Citations (Scopus)

Abstract

Magnetic properties and magnetic entropy changes in LaFe _11.5Si_1.5 have been investigated by partially substituting Pr by La. It is found that La_1-xPr_xFe _11.5Si_1.5 compounds remain cubic NaZn₁₃-type structures even when the Pr content is increased to 0.5, i.e. x = 0.5. Substitution of Pr for La leads to a reduction in both the crystal constant and the Curie temperature. A stepwise magnetic behaviour in the isothermal magnetization curves is observed, indicating that the characteristic of the itinerant electron metamagnetic (IEM) transition above T_C becomes more prominent with the Pr content increasing. As a result, the magnetic entropy change is remarkably enhanced from 23.0 to 29.4 J/kg·K as the field changes from 0 to 5 T, with the value of x increasing from 0 to 0.5. It is more attractive that the magnetic entropy changes for all samples are shaped into high plateaus in a wide range of temperature, which is highly favourable for Ericsson-type magnetic refrigeration.

Original language	English
Pages (from-to)	3848-3852
Number of pages	5
Journal	Chinese Physics
Volume	16
Issue number	12
DOIs	https://doi.org/10.1088/1009-1963/16/12/049
Publication status	Published - 1 Dec 2007
Externally published	Yes

Keywords

Itinerant electron metamagnetic transition
LaPrFeSi compounds
Magnetic entropy change
Magnetic property

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10.1088/1009-1963/16/12/049

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title = "Magnetic properties and magnetic entropy changes of La1-xPr xFe11.5Si1.5 compounds with 0 ≤ x ≤ 0.5",

abstract = "Magnetic properties and magnetic entropy changes in LaFe 11.5Si1.5 have been investigated by partially substituting Pr by La. It is found that La1-xPrxFe 11.5Si1.5 compounds remain cubic NaZn13-type structures even when the Pr content is increased to 0.5, i.e. x = 0.5. Substitution of Pr for La leads to a reduction in both the crystal constant and the Curie temperature. A stepwise magnetic behaviour in the isothermal magnetization curves is observed, indicating that the characteristic of the itinerant electron metamagnetic (IEM) transition above TC becomes more prominent with the Pr content increasing. As a result, the magnetic entropy change is remarkably enhanced from 23.0 to 29.4 J/kg·K as the field changes from 0 to 5 T, with the value of x increasing from 0 to 0.5. It is more attractive that the magnetic entropy changes for all samples are shaped into high plateaus in a wide range of temperature, which is highly favourable for Ericsson-type magnetic refrigeration.",

keywords = "Itinerant electron metamagnetic transition, LaPrFeSi compounds, Magnetic entropy change, Magnetic property",

author = "Jun Shen and Bo Gao and Yan, {Li Qin} and Li, {Yang Xian} and Zhang, {Hong Wei} and Hu, {Feng Xia} and Sun, {Ji Rong}",

year = "2007",

month = dec,

day = "1",

doi = "10.1088/1009-1963/16/12/049",

language = "English",

volume = "16",

pages = "3848--3852",

journal = "Chinese Physics",

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TY - JOUR

T1 - Magnetic properties and magnetic entropy changes of La1-xPr xFe11.5Si1.5 compounds with 0 ≤ x ≤ 0.5

AU - Shen, Jun

AU - Gao, Bo

AU - Yan, Li Qin

AU - Li, Yang Xian

AU - Zhang, Hong Wei

AU - Hu, Feng Xia

AU - Sun, Ji Rong

PY - 2007/12/1

Y1 - 2007/12/1

N2 - Magnetic properties and magnetic entropy changes in LaFe 11.5Si1.5 have been investigated by partially substituting Pr by La. It is found that La1-xPrxFe 11.5Si1.5 compounds remain cubic NaZn13-type structures even when the Pr content is increased to 0.5, i.e. x = 0.5. Substitution of Pr for La leads to a reduction in both the crystal constant and the Curie temperature. A stepwise magnetic behaviour in the isothermal magnetization curves is observed, indicating that the characteristic of the itinerant electron metamagnetic (IEM) transition above TC becomes more prominent with the Pr content increasing. As a result, the magnetic entropy change is remarkably enhanced from 23.0 to 29.4 J/kg·K as the field changes from 0 to 5 T, with the value of x increasing from 0 to 0.5. It is more attractive that the magnetic entropy changes for all samples are shaped into high plateaus in a wide range of temperature, which is highly favourable for Ericsson-type magnetic refrigeration.

AB - Magnetic properties and magnetic entropy changes in LaFe 11.5Si1.5 have been investigated by partially substituting Pr by La. It is found that La1-xPrxFe 11.5Si1.5 compounds remain cubic NaZn13-type structures even when the Pr content is increased to 0.5, i.e. x = 0.5. Substitution of Pr for La leads to a reduction in both the crystal constant and the Curie temperature. A stepwise magnetic behaviour in the isothermal magnetization curves is observed, indicating that the characteristic of the itinerant electron metamagnetic (IEM) transition above TC becomes more prominent with the Pr content increasing. As a result, the magnetic entropy change is remarkably enhanced from 23.0 to 29.4 J/kg·K as the field changes from 0 to 5 T, with the value of x increasing from 0 to 0.5. It is more attractive that the magnetic entropy changes for all samples are shaped into high plateaus in a wide range of temperature, which is highly favourable for Ericsson-type magnetic refrigeration.

KW - Itinerant electron metamagnetic transition

KW - LaPrFeSi compounds

KW - Magnetic entropy change

KW - Magnetic property

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DO - 10.1088/1009-1963/16/12/049

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SN - 1009-1963

VL - 16

SP - 3848

EP - 3852

JO - Chinese Physics

JF - Chinese Physics

IS - 12

ER -

Magnetic properties and magnetic entropy changes of La_1-xPr _xFe_11.5Si_1.5 compounds with 0 ≤ x ≤ 0.5

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Keywords

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