Magnetic phase diagram of the mnx fe2−x p1−y siy system

Xinmin You; Michael Maschek; Niels Harmen H. van Dijk; Ekkes Brück

doi:10.3390/e24010002

Magnetic phase diagram of the mn_x fe_2−x p_1−y si_y system

Xinmin You, Michael Maschek, Niels Harmen H. van Dijk, Ekkes Brück^*

^*Corresponding author for this work

RST/Fundamental Aspects of Materials and Energy

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

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Abstract

The phase diagram of the magnetocaloric Mn_x Fe_2−x P_1−y Si_y quaternary compounds was established by characterising the structure, thermal and magnetic properties in a wide range of compositions (for a Mn fraction of 0.3 ≤ x < 2.0 and a Si fraction of 0.33 ≤ y ≤ 0.60). The highest ferromagnetic transition temperature (Mn_0.3 Fe_1.7 P_0.6 Si_0.4, T_C = 470 K) is found for low Mn and high Si contents, while the lowest is found for low Fe and Si contents (Mn_1.7 Fe_0.3 P_0.6 Si_0.4, T_C = 65 K) in the Mn_x Fe_2−x P_1−y Si_y phase diagram. The largest hysteresis (91 K) was observed for a metal ratio close to Fe:Mn = 1:1 (corresponding to x = 0.9, y = 0.33). Both Mn-rich with high Si and Fe-rich samples with low Si concentration were found to show low hysteresis (≤2 K). These compositions with a low hysteresis form promising candidate materials for thermomagnetic applications.

Original language	English
Article number	2
Number of pages	12
Journal	Entropy
Volume	24
Issue number	1
DOIs	https://doi.org/10.3390/e24010002
Publication status	Published - 2022

Keywords

Magnetic entropy
Magnetocaloric materials
Mn-Fe-P-Si
Phase diagram
Thermal hysteresis
Transition temperature

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10.3390/e24010002

entropy-24-00002-v2Final published version, 12.8 MBLicence: CC BY

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title = "Magnetic phase diagram of the mnx fe2−x p1−y siy system",

abstract = "The phase diagram of the magnetocaloric Mnx Fe2−x P1−y Siy quaternary compounds was established by characterising the structure, thermal and magnetic properties in a wide range of compositions (for a Mn fraction of 0.3 ≤ x < 2.0 and a Si fraction of 0.33 ≤ y ≤ 0.60). The highest ferromagnetic transition temperature (Mn0.3 Fe1.7 P0.6 Si0.4, TC = 470 K) is found for low Mn and high Si contents, while the lowest is found for low Fe and Si contents (Mn1.7 Fe0.3 P0.6 Si0.4, TC = 65 K) in the Mnx Fe2−x P1−y Siy phase diagram. The largest hysteresis (91 K) was observed for a metal ratio close to Fe:Mn = 1:1 (corresponding to x = 0.9, y = 0.33). Both Mn-rich with high Si and Fe-rich samples with low Si concentration were found to show low hysteresis (≤2 K). These compositions with a low hysteresis form promising candidate materials for thermomagnetic applications.",

keywords = "Magnetic entropy, Magnetocaloric materials, Mn-Fe-P-Si, Phase diagram, Thermal hysteresis, Transition temperature",

author = "Xinmin You and Michael Maschek and {van Dijk}, {Niels Harmen H.} and Ekkes Br{\"u}ck",

year = "2022",

doi = "10.3390/e24010002",

language = "English",

volume = "24",

journal = "Entropy",

issn = "1099-4300",

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TY - JOUR

T1 - Magnetic phase diagram of the mnx fe2−x p1−y siy system

AU - You, Xinmin

AU - Maschek, Michael

AU - van Dijk, Niels Harmen H.

AU - Brück, Ekkes

PY - 2022

Y1 - 2022

N2 - The phase diagram of the magnetocaloric Mnx Fe2−x P1−y Siy quaternary compounds was established by characterising the structure, thermal and magnetic properties in a wide range of compositions (for a Mn fraction of 0.3 ≤ x < 2.0 and a Si fraction of 0.33 ≤ y ≤ 0.60). The highest ferromagnetic transition temperature (Mn0.3 Fe1.7 P0.6 Si0.4, TC = 470 K) is found for low Mn and high Si contents, while the lowest is found for low Fe and Si contents (Mn1.7 Fe0.3 P0.6 Si0.4, TC = 65 K) in the Mnx Fe2−x P1−y Siy phase diagram. The largest hysteresis (91 K) was observed for a metal ratio close to Fe:Mn = 1:1 (corresponding to x = 0.9, y = 0.33). Both Mn-rich with high Si and Fe-rich samples with low Si concentration were found to show low hysteresis (≤2 K). These compositions with a low hysteresis form promising candidate materials for thermomagnetic applications.

AB - The phase diagram of the magnetocaloric Mnx Fe2−x P1−y Siy quaternary compounds was established by characterising the structure, thermal and magnetic properties in a wide range of compositions (for a Mn fraction of 0.3 ≤ x < 2.0 and a Si fraction of 0.33 ≤ y ≤ 0.60). The highest ferromagnetic transition temperature (Mn0.3 Fe1.7 P0.6 Si0.4, TC = 470 K) is found for low Mn and high Si contents, while the lowest is found for low Fe and Si contents (Mn1.7 Fe0.3 P0.6 Si0.4, TC = 65 K) in the Mnx Fe2−x P1−y Siy phase diagram. The largest hysteresis (91 K) was observed for a metal ratio close to Fe:Mn = 1:1 (corresponding to x = 0.9, y = 0.33). Both Mn-rich with high Si and Fe-rich samples with low Si concentration were found to show low hysteresis (≤2 K). These compositions with a low hysteresis form promising candidate materials for thermomagnetic applications.

KW - Magnetic entropy

KW - Magnetocaloric materials

KW - Mn-Fe-P-Si

KW - Phase diagram

KW - Thermal hysteresis

KW - Transition temperature

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U2 - 10.3390/e24010002

DO - 10.3390/e24010002

M3 - Article

AN - SCOPUS:85121625627

SN - 1099-4300

VL - 24

JO - Entropy

JF - Entropy

IS - 1

M1 - 2

ER -

Magnetic phase diagram of the mn_x fe_2−x p_1−y si_y system

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