High-temperature phase transition and magnetic property of LaFe11.6Si1.4 compound

Chen, Xiang; Chen, Yungui; Tang, Yawen

doi:10.1016/j.jallcom.2011.05.054

Cited by 44 publications

(19 citation statements)

References 35 publications

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“…The Retiveld refinement is indicated in Table 2 and it is shown that the weight of NaZn 13 structure increases from 69% at LTA to 96% while the weight amount of LaFeSi and the α-Fe stage at HTA is found to decrease. The constitutions of the formed NaZn 13 structure in 1523 K for 4 h of annealing treatment are in concurrence with other groups [22,23]. However, it was hard to shape a single-structure sample by the bulk synthesis technique as a low cooling rate of the solidification procedure which will deliver an inhomogeneous structure to the sample.…”

Section: Introductionsupporting

confidence: 83%

“…It can be seen that the M-B curves exhibit almost no magnetic hysteresis for x = 0.34 which is found to be similar of the characteristic at x = 0 but did not change the first-order magnetic transition behaviour [26]. The phenomenon will provide the advantage of the sample with higher IEM transition and will contribute to enhance the value of magnetic entropy change [11,23,35].…”

Section: Magnetic Propertiesmentioning

confidence: 97%

“…Many researchers set up this compound treatment in the range of 1173-1323 K for at least 10 days to produce the NaZn 13 -type structure [17][18][19]. However, the peritectic response temperature in La(Fe,Si) 13 is around 1673 K regarding the La-Fe quasi table diagram [20] and the temperature was found to be more beneficial in the shorting-stage change process [21] as demonstrated by Liu et al [22] and Chen et al [23]. Both these groups revealed that the readiness in temperature range around 1323-1623 K can create most measures of the NaZn 13 -type structure.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect on Heat Treatment and Doping of Cubic NaZn13-Type La0.7Pr0.3(Fe,Si)13 for Magnetic Refrigerator Application

Din¹,

Wang²,

Ishak³

2018

Intermetallic Compounds - Formation and Applications

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Soft ferromagnetic cubic NaZn 13-type La 0.7 Pr 0.3 Fe 11.4 Si 1.6 has turned out to be a standout amongst the most fascinating compounds for investigating substantial magnetocaloric effect (MCE) on the grounds that the attractive properties of this compound shows large enough spontaneous magnetization for applications, strongly doping dependent, and as well as delicate soft ferromagnetism. These impacts can be attributed to the itinerant electron metamagnetic (IEM) transition especially around the first-order magnetic transition region. However, this compound is difficult to frame by the basic cementing process because of the inherent deficiency of the peritectic response, Υ-Fe + La → La(Fe,Si) 13 (τ 1a), which frequently brings about a blended microstructure of α-Fe + La(Fe,Si) 13 (τ 1a) + LaFeSi(τ 4). Additionally, dependability of La(Fe x Si 1−x) 13 is no middle-of-the-road stage and common solvency amongst Fe and La in the Fe-La framework as a reality is represented by response dispersion as indicated by magnetic and electronic states' contribution. From this point of view, the structure, attractive properties and MCE of this compound have been talked about in detail as indicated by various temperatures and times of the annealing treatment. In addition, efficiently contemplating on the doping impact from various concentrations of transition metal elements such as Copper (Cu) and Chromium (Cr) on Iron (Fe) in the La 0.7 Pr 0.3 Fe 11.4 Si 1.6 compound is likewise discussed.

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Section: Introductionsupporting

confidence: 83%

Section: Magnetic Propertiesmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect on Heat Treatment and Doping of Cubic NaZn13-Type La0.7Pr0.3(Fe,Si)13 for Magnetic Refrigerator Application

Din¹,

Wang²,

Ishak³

2018

Intermetallic Compounds - Formation and Applications

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“…Fe LaFeSi La Fe, Si 13 α − + → ( ) [14]. The carbonenriched spots are likely associated with diamond debris and organic matter accumulation in the pores of the sample, resulting from the sample polishing process.…”

Section: Materials and Measurement Methodsmentioning

confidence: 99%

Local magnetic behavior across the first order phase transition in La(Fe0.9Co0.015Si0

Bennati

Laviano

Durin

et al. 2016

Journal of Magnetism and Magnetic Materials

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“…Given that the Curie temperature of LaFe 13-x Si x is usually lower than 210 K, significant efforts have been made in order to enhance T C and retain the larger MCE performance. Among the approaches taken are: (1) introduction of interstitial atoms (hydrogen or carbon) [10,11]; (2) elemental substitution (substituting La [12,13] and Fe [14,15] by another rare-earth or transition metal), (3) modification of synthesis methods (arc-melting or induction-melting with various heat treatments [16], melt-spinning [17] and ball-milling [18]).…”

Section: Introductionmentioning

confidence: 99%

Magnetic transitions in LaFe13−x−yCoySix compounds

et al. 2013

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The magnetic properties of a set of LaFe13−x−yCoySix compounds (x = 1.6 − 2.6; y = 0, y = 1.0) have been investigated using magnetic measurements, thermal expansion, 57Fe Mössbauer spectroscopy and high resolution neutron powder diffraction methods over the temperature range 10-300 K. The natures of the magnetic transitions in these LaFe13−x−yCoySix compounds have been determined. The Curie temperatures of LaFe13−xSix were found to increase with Si content from TC = 219(5) K for Si content x = 1.6 to TC = 250(5) K for x = 2.6. Substitution of Co for Fe in LaFe10.4Si2.6 resulted in a further enhancement of the magnetic ordering temperature to TC = 281(5) K for the LaFe9.4CoSi2.6 compound. The nature of the magnetic transition at the Curie temperature changes from first order for LaFe11.4Si1.6 to second order for LaFe10.4Si2.6 and LaFe9.4CoSi2.6. The temperature dependences of the mean magnetic hyperfine field values lead to TC values in good agreement with analyses of the magnetic measurements. The magnetic entropy change, −ΔSM, has been determined from the magnetization curves as functions of temperature and magnetic field (ΔB = 0 − 5 T) by applying the standard Maxwell relation. In the case of LaFe12.4Si1.6 for example, the magnetic entropy change around TC is determined to be -ΔSM ∼ 14.5 J kg−1 K−1 for a magnetic field change Δ B = 0 − 5 T. Abstract:The magnetic properties of a set of LaFe 13-x-y Co y Si x compounds (x = 1.6-2.6; y = 0, y = 1.0) have been investigated using magnetic measurements, thermal expansion, 57 Fe Mössbauer spectroscopy and high resolution neutron powder diffraction methods over the temperature range 10 -300 K. The natures of the magnetic transitions in these LaFe 13-xy Co y Si x compounds have been determined. The Curie temperatures of LaFe 13-x Si x were found to increase with Si content from T C =219(5) K for Si content x=1.6 to T C =250(5) K for x=2.6.Substitution of Co for Fe in LaFe 10.4 Si 2.6 resulted in a further enhancement of the magnetic ordering temperature to T C =281(5) K for the LaFe 9.4 CoSi 2.6 compound. The nature of the magnetic transition at the Curie temperature changes from first order for LaFe 11.4 Si 1.6 to second order for LaFe 10.4 Si 2.6 and LaFe 9.4 CoSi 2.6 . The temperature dependences of the mean magnetic hyperfine field values lead to T C values in good agreement with analyses of the magnetic measurements. The magnetic entropy change, -∆S M , has been determined from the magnetization curves as functions of temperature and magnetic field (∆B = 0-5 T) by applying the standard Maxwell relation. In the case of LaFe 12.4 Si 1.6 for example, the magnetic entropy change around T C is determined to be -∆S M ~ 14.5 J kg -1 K -1 for a magnetic field change ∆B=0 -5 T.

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High-temperature phase transition and magnetic property of LaFe11.6Si1.4 compound

Cited by 44 publications

References 35 publications

Effect on Heat Treatment and Doping of Cubic NaZn13-Type La0.7Pr0.3(Fe,Si)13 for Magnetic Refrigerator Application

Effect on Heat Treatment and Doping of Cubic NaZn13-Type La0.7Pr0.3(Fe,Si)13 for Magnetic Refrigerator Application

Local magnetic behavior across the first order phase transition in La(Fe0.9Co0.015Si0

Magnetic transitions in LaFe13−x−yCoySix compounds

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