<trans-title xml:lang="en">Phase transformation, magnetic properties, and exchange bias of Heusler alloy Mn50–xCrxNi42Sn8</trans-title>

Algethami Obaidallah A; Ge-Tian Li; Zhu-Hong Liu; Xing-Qiao Ma

doi:10.7498/aps.69.20191551

Acta Physica Sinica, Volume. 69, Issue 5, 058102-1(2020)

Phase transformation, magnetic properties, and exchange bias of Heusler alloy Mn_50–xCr_xNi₄₂Sn₈

Algethami Obaidallah A, Ge-Tian Li, Zhu-Hong Liu^*, and Xing-Qiao Ma

Author Affiliations

Department of Physics, University of Science and Technology Beijing, Beijing 100083, China

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Fig. 1. XRD patterns for Mn_50–xCr_xNi₄₂Sn₈(x = 0, 0.4, 0.6, 0.8) polycrystalline samples measured at room temperature.

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Fig. 2. Temperature dependence of magnetization upon field heating procedures in the field of 100 Oe for Mn_50–xCr_xNi₄₂Sn₈(x = 0, 0.4, 0.6, 0.8) polycrystalline samples, and inset shows magnification of the shadow part.

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Fig. 3. (a) Cr content dependence of Curie temperature of martensite phase and martensitic transformation temperature T_M, (b) T_M as a function of valence electron concentration, (c) cell volume, and (d) the distance between Ni and Mn at D site for Mn_50–xCr_xNi₄₂Sn₈ (x = 0.4, 0.6, 0.8).

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Fig. 4. Temperature dependence of magnetization upon heating procedures in field of 20 kOe for Mn_50–xCr_xNi₄₂Sn₈ (x = 0.4, 0.6, 0.8).

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Fig. 5. The sketched unit cells of the austenite and martensite structures.

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Fig. 6. (a) Magnetization hysteresis loops for Mn_50–xCr_xNi₄₂Sn₈(x = 0, 0.6, 0.8) polycrystalline samples measured at 5 K after 500 Oe field cooling, inset shows the magnification of the shadow part; (b) the values of H_C and H_EB as a function of Cr content.

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Fig. 7. (a) Magnetization hysteresis loops for Mn_49.2Cr_0.8Ni₄₂Sn₈ polycrystalline sample measured at 5 K after different field cooling, inset shows the magnification of the shadow part; (b) the values of H_C and H_EB under different cooling field.

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Table 1. Lattice parameters, c/a, and cell volume of Mn_50–x Cr_xNi₄₂Sn₈ (x = 0, 0.4, 0.6, 0.8) polycrystalline samples at room temperature.
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Table 1. Lattice parameters, c/a, and cell volume of Mn_50–x Cr_xNi₄₂Sn₈ (x = 0, 0.4, 0.6, 0.8) polycrystalline samples at room temperature.
x a = b/Å c/Å c/a 晶胞体积/Å³
0 5.4881 6.9681 1.269 209.87
0.4 5.4966 6.9601 1.266 210.30
0.6 5.5136 6.9463 1.259 210.70
0.8 5.5221 6.9342 1.255 211.50

Table 2. The atomic distance of Mn_(D)-Ni_(A), Mn_(B)-Mn_(A),and Mn_(B)-Mn_(D)in Mn_50–xCr_xNi₄₂Sn₈(x = 0, 0.4, 0.6, 0.8) polycrystalline samples.

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Table 2. The atomic distance of Mn_(D)-Ni_(A), Mn_(B)-Mn_(A),and Mn_(B)-Mn_(D)in Mn_50–xCr_xNi₄₂Sn₈(x = 0, 0.4, 0.6, 0.8) polycrystalline samples.

Cr含量x	Mn_D-Ni_A/Å ( $ \sqrt 3 $a/4)	Mn_B-Mn_A/Å ( $ \sqrt 3 $a/4)	Mn_B-Mn_D/Å (a/2)
0	2.376	2.376	2.744
0.4	2.38	2.38	2.748
0.6	2.387	2.387	2.757
0.8	2.391	2.391	2.761

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Algethami Obaidallah A, Ge-Tian Li, Zhu-Hong Liu, Xing-Qiao Ma. Phase transformation, magnetic properties, and exchange bias of Heusler alloy Mn_50–xCr_xNi₄₂Sn₈[J]. Acta Physica Sinica, 2020, 69(5): 058102-1

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Paper Information

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Received: Oct. 12, 2019

Accepted: --

Published Online: Nov. 18, 2020

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DOI:10.7498/aps.69.20191551

Topics

Nuclear physics

Particles and fields

Particle and nuclear astrophysics and cosmology

Table 1. Lattice parameters, c/a, and cell volume of Mn50–x CrxNi42Sn8 (x = 0, 0.4, 0.6, 0.8) polycrystalline samples at room temperature.

Table 1. Lattice parameters, c/a, and cell volume of Mn50–x CrxNi42Sn8 (x = 0, 0.4, 0.6, 0.8) polycrystalline samples at room temperature.

Table 2. The atomic distance of Mn(D)-Ni(A), Mn(B)-Mn(A),and Mn(B)-Mn(D)in Mn50–xCrxNi42Sn8(x = 0, 0.4, 0.6, 0.8) polycrystalline samples.

Table 2. The atomic distance of Mn(D)-Ni(A), Mn(B)-Mn(A),and Mn(B)-Mn(D)in Mn50–xCrxNi42Sn8(x = 0, 0.4, 0.6, 0.8) polycrystalline samples.

Table 1. Lattice parameters, c/a, and cell volume of Mn_50–x Cr_xNi₄₂Sn₈ (x = 0, 0.4, 0.6, 0.8) polycrystalline samples at room temperature.

Table 1. Lattice parameters, c/a, and cell volume of Mn_50–x Cr_xNi₄₂Sn₈ (x = 0, 0.4, 0.6, 0.8) polycrystalline samples at room temperature.

Table 2. The atomic distance of Mn_(D)-Ni_(A), Mn_(B)-Mn_(A),and Mn_(B)-Mn_(D)in Mn_50–xCr_xNi₄₂Sn₈(x = 0, 0.4, 0.6, 0.8) polycrystalline samples.

Table 2. The atomic distance of Mn_(D)-Ni_(A), Mn_(B)-Mn_(A),and Mn_(B)-Mn_(D)in Mn_50–xCr_xNi₄₂Sn₈(x = 0, 0.4, 0.6, 0.8) polycrystalline samples.