Alteration of negative lattice expansion of the La(Fe,Si)13-type phase in LaFe11.14−xCo0.66NixSi1.2 alloys

Gębara, P.; Pawlik, P.; Hasiak, M.

doi:10.1016/j.jmmm.2016.08.068

Cited by 19 publications

(12 citation statements)

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“…2 The effect of Cr and Ni element substitution for Fe on the magnetocaloric effect has been studied. [8][9][10] The negative lattice expansion was observed in LaFe 11.14-x Co 0.66 Ni x Si 1.2 alloys. 8 Partial substitution of Ni for Fe in La(Fe 1-x Ni x ) 11.5 Si 1.5 alloys promote fining of the as-cast microstructure and the Curie temperature of La(Fe 1-x Ni x ) 11.5 Si 1.5 alloys increase with the increase of Ni.…”

Section: Introductionmentioning

confidence: 93%

“…[8][9][10] The negative lattice expansion was observed in LaFe 11.14-x Co 0.66 Ni x Si 1.2 alloys. 8 Partial substitution of Ni for Fe in La(Fe 1-x Ni x ) 11.5 Si 1.5 alloys promote fining of the as-cast microstructure and the Curie temperature of La(Fe 1-x Ni x ) 11.5 Si 1.5 alloys increase with the increase of Ni. 9 Ni and Cr participated in peritectoid and slightly entered in 1:13 phase, which would cause the disappearance of first order magnetic phase transition.…”

Section: Introductionmentioning

confidence: 93%

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The influence of Cr and Ni on the character of magnetic phase transition in LaFe11.52-xMxSi1.48 alloys

Zong

Long

2017

AIP Advances

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The critical content of the substitution element M for Fe in LaFe11.52-xMxSi1.48 (M=Ni/Cr) alloys was studied. When the content exceeds the critical content of the element M, the nature of magnetic transition of the alloy changes from first order to second. And the relationship between phase formation and magnetic properties in LaFe11.52-xMxSi1.48 (M=Ni/Cr) alloys near critical value of Ni/Cr has been discussed sufficiently. The critical content of Ni element is x=0.08 and that of Cr is x=0.25. With the increase of Cr content, the α-Fe grows up obviously in LaFe11.52-xCrxSi1.48 alloys. The impact of partial substitution of Ni for Fe is superior to that of Cr on the magnetic properties of 1:13 phase. The substitution elements and the content of those elements have different effects on the nature of magnetic transition and magnetic entropy changes of LaFe11.52-xMxSi1.48 alloys.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 93%

The influence of Cr and Ni on the character of magnetic phase transition in LaFe11.52-xMxSi1.48 alloys

Zong

Long

2017

AIP Advances

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“…From practical view point, an active regenerator of magnetic refrigerator should exhibit a high magnetic entropy change ∆S M , the Curie temperature close to ambient temperature, relatively low price, and non-toxicity. The La(Fe,Si) 13 group of alloys obeys these conditions, due to high Fe content and excellent magnetic properties of fcc NaZn 13 -type structure [1][2][3]8]. As it was shown in [1][2][3]8], even a slight devation of chemical composition of the La(Fe,Si) 13 alloys causes changes in magnetic properties.…”

Section: Introductionmentioning

confidence: 76%

“…The Fe-based alloys are intensively studied due to their specific magnetic properties, including the magnetocaloric effect (MCE) in the vicinity of room temperature [1][2][3][4][5][6]. The MCE is currently the most efficient cooling technique with efficiency reaching up even 60% (in the Ericsson cycle) [7].…”

Section: Introductionmentioning

confidence: 99%

Structural and Magnetic Studies of the LaFe_11.2Co_0.7-xMn_xSi_1.1 (where x=0.1, 0.2) Alloys

et al. 2018

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The aim of present work was to study the influence of partial substitution of Co by Mn in the LaFe11.2Co0.7Si1.1 alloy on its structure and magnetic properties. The X-ray diffraction studies revealed coexistence of dominant pseudobinary fcc La(Fe,Si)13-type phase with minor fraction of α-Fe. Moreover, the increase of Mn content causes decrease of the lattice parameter and the Curie temperature. The values of magnetic entropy change obtained for both investigated alloys are almost identical and close to 12 J/(kg K) under the change of external magnetic field 5 T. Investigations of magnetic phase transition confirmed its second order nature in the case of both specimens.

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“…For the last decade, the La(Fe,Si) 13 alloys have been modified by lanthanides (i.e. Pr [8], Ce [9]), transition metals (Co [10], Ni [11] or Mn [12]) and metalloids (i.e. Al [13] or Ga [14]).…”

Section: Introductionmentioning

confidence: 99%

Influence of Partial Substitution of Fe by Mn on the Thermomagnetic Properties of Magnetocaloric LaFe_11.2Co_0.7Si_1.1 Alloy

Gębara

Marcin

2018

Acta Phys. Pol. A

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The aim of this paper was to study the influence of partial substitution of Fe by Mn in the LaFe11.2¡xMnxCo0.7Si1.1 (where x 0.1, 0.2 and 0.3) alloys. Measurements revealed that a systematic increase of Mn in the alloy composition resulted in a decrease of the Curie temperature, which correlated with a decrease of the lattice parameter of the La(Fe,Si)13-type phase. For samples corresponding to Mn content x 0.1 and 0.2 a decrease of magnetic entropy change was observed. However in the case of the sample with x 0.3 an increase of magnetic entropy change was detected.

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Alteration of negative lattice expansion of the La(Fe,Si)13-type phase in LaFe11.14−xCo0.66NixSi1.2 alloys

Cited by 19 publications

References 37 publications

The influence of Cr and Ni on the character of magnetic phase transition in LaFe11.52-xMxSi1.48 alloys

The influence of Cr and Ni on the character of magnetic phase transition in LaFe11.52-xMxSi1.48 alloys

Structural and Magnetic Studies of the LaFe_11.2Co_0.7-xMn_xSi_1.1 (where x=0.1, 0.2) Alloys

Influence of Partial Substitution of Fe by Mn on the Thermomagnetic Properties of Magnetocaloric LaFe_11.2Co_0.7Si_1.1 Alloy

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Alteration of negative lattice expansion of the La(Fe,Si)13-type phase in LaFe11.14−xCo0.66NixSi1.2 alloys

Cited by 19 publications

References 37 publications

The influence of Cr and Ni on the character of magnetic phase transition in LaFe11.52-xMxSi1.48 alloys

The influence of Cr and Ni on the character of magnetic phase transition in LaFe11.52-xMxSi1.48 alloys

Structural and Magnetic Studies of the LaFe11.2Co0.7-xMnxSi1.1 (where x=0.1, 0.2) Alloys

Influence of Partial Substitution of Fe by Mn on the Thermomagnetic Properties of Magnetocaloric LaFe11.2Co0.7Si1.1 Alloy

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Structural and Magnetic Studies of the LaFe_11.2Co_0.7-xMn_xSi_1.1 (where x=0.1, 0.2) Alloys

Influence of Partial Substitution of Fe by Mn on the Thermomagnetic Properties of Magnetocaloric LaFe_11.2Co_0.7Si_1.1 Alloy