Effect of chromium substitution on structural, magnetic and magnetocaloric properties of GdFe12−Cr  intermetallic compounds, Mössbauer spectrometry and ab initio calculations

Saidi, M.; Walha, Siwar; Hlil, E.K.; Bessaïs, L.; Jemmali, M.

doi:10.1016/j.jssc.2021.122019

Cited by 9 publications

(9 citation statements)

References 101 publications

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“…x Fe x (x = 0; 0,3 and 0,8) [47], GdFe 12 − x Cr x [48] were prepared by arc furnace. These iron-based ternary diagrams R (Sm, Gd, Er, Nd)-Fe-M (Al, Cr, Cu, Co, Ni) were achieved using arc furnace method [49][50][51][52][53][54][55][56].…”

Section: Synthesis By Arc Furnacementioning

confidence: 99%

Polycrystalline Powder Synthesis Methods

Jemmali¹,

Marzougui²,

Smida³

et al. 2022

Crystallization and Applications

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The synthesis of polycrystalline powder is a key step for materials sciences. In this chapter, we present the well-known methods of preparation of powders such as: solid-state reaction, sol–gel, hydrothermal, combustion, co-precipitation. Moreover, synthesis methods by arc furnace, by heating in a “high frequency” induction furnace and by high energy grinding are presented. The obtained powders could be defined by their purity, gain size, crystallinity, and morphology, which are influenced by the synthesis method. In addition, each method is dependent on some parameters like pH, concentration and temperature.

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Section: Synthesis By Arc Furnacementioning

confidence: 99%

Polycrystalline Powder Synthesis Methods

Jemmali¹,

Marzougui²,

Smida³

et al. 2022

Crystallization and Applications

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“…The 1/12 phase could be stabilized by several elements such as Ti [ 25 , 79 , 80 , 81 , 82 , 83 , 84 ], Si [ 80 ], Mo [ 79 , 80 , 85 ], W [ 73 , 79 , 80 ], Cr [ 79 , 80 , 86 ], V [ 79 , 83 , 87 ], Al [ 80 ]. The solubility and the range of existence of the RFe

phase vary from one substituent to another.…”

Section: Structure Analysismentioning

confidence: 99%

“…The most rigorous method to assign the different sextuplets to the non-equivalent crystallographic sites (

and

for Th

phase, and

and

for ThMn

phase) takes into account the hyperfine fields,

and the Wigner–Seitz cell volumes (WSC). The correlation between the Wigner-Seitz cell volumes and the isomer shift has been established [ 21 , 25 , 82 , 84 , 86 ]. The larger the isomer shift, the larger WSC volume.…”

Section: Intrinsic Magnetic Propertiesmentioning

confidence: 99%

“…Concerning the tetragonal

ThMn

-type structure several studies were devoted to R Fe

Ti ( R = Y, Pr, Nd, Sm, Gd) intermetallics [ 25 , 84 , 86 , 105 , 106 , 107 ]. The refined hyperfine field (

), isomer shift (

), and quadrupole interaction (

) for the studied intermetallics are presented in Table 8 .…”

Section: Intrinsic Magnetic Propertiesmentioning

confidence: 99%

“…The total energy of GdFe

has been calculated for the three possible substitution Cr sites. This calculation showed that the lowest total energy is consistent with the substitution of iron with chromium in the

site ( Table 9 ), indicating that Cr preferentially occupies this site [ 86 ]. This result is in agreement with Moze and Buschow’s study of the YFe

system [ 112 ].…”

Section: Intrinsic Magnetic Propertiesmentioning

confidence: 99%

See 2 more Smart Citations

Structure and Magnetic Properties of Intermetallic Rare-Earth-Transition-Metal Compounds: A Review

Bessaïs

2021

Materials

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This review discusses the properties of candidate compounds for semi-hard and hard magnetic applications. Their general formula is R1−sT5+2s with R = rare earth, T = transition metal and 0≤s≤0.5 and among them, the focus will be on the ThMn12- and Th2Zn17-type structures. Not only will the influence of the structure on the magnetic properties be shown, but also the influence of various R and T elements on the intrinsic magnetic properties will be discussed (R = Y, Pr, Nd, Sm, Gd, … and T = Fe, Co, Si, Al, Ga, Mo, Zr, Cr, Ti, V, …). The influence of the microstructure on the extrinsic magnetic properties of these R–T based intermetallic nanomaterials, prepared by high energy ball milling followed by short annealing, will be also be shown. In addition, the electronic structure studied by DFT will be presented and compared to the results of experimental magnetic measurements as well as the hyperfine parameter determined by Mössbauer spectrometry.

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