Crystal structure, thermal expansion and electrical properties of GdCo0.67Ga1.33 compound

Liang, Liuqing; Zeng, Lingmin; Liu, Shuhui; He, Wei

doi:10.1016/j.physb.2013.04.060

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…A sample of the ternary compound Al 3 CoNd 2 was prepared by melting high-purity metals of Al, Co, and Nd in an arc furnace under an argon atmosphere (Liang et al, 2013). a) Author to whom correspondence should be addressed.…”

Section: Methodsmentioning

confidence: 99%

Crystal structure and magnetic properties of ternary Al₃CoNd₂ compound

Liang

Jia

et al. 2021

Powder Diffr.

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A ternary compound Al3CoNd2 was synthesized and its crystal structure parameters were determined by the Rietveld refinement method based on powder X-ray diffraction data. Results show that the compound crystallizes in the MgCu2-type structure (cubic Laves C15 phase, space group $Fd\bar{3}m$ ), with the lattice parameter of a = 7.8424(2) Ǻ, unit-cell volume of V = 482.33 Å3, and calculated density of Dcalc = 5.90 g.cm−3. The residual factors converge to Rp = 0.1024 and Rwp = 0.1287. The reference intensity ratio value obtained experimentally is 3.03. Magnetic susceptibility measurements indicate an agreement with the Curie–Weiss law in the temperature range of 385–450 K, and paramagnetic Curie temperature of θp = 379.9 K. Both rare-earth elements and cobalt ions contribute to the paramagnetic moment. The saturation magnetic moment and magnetic hysteresis loop were measured for the Al3CoNd2 compound at various temperatures. Results show that the saturation magnetic moment value decreases with an increase in temperature and the compound becomes a ferromagnet below the Curie temperature Tc.

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Section: Methodsmentioning

confidence: 99%

Crystal structure and magnetic properties of ternary Al₃CoNd₂ compound

Liang

Jia

et al. 2021

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“…In this work, nonmagnetic Ga was chosen to substitute for Co. Previously, a few structures have been reported in Gd(Co1-xGax)2 system: 1) cubic MgCu2-type GdCo2 (Fd 3 m) 6 ; 2) hexagonal MgZn2-type structure for GdCo1.333Ga0.667 (P63/mmc); 7 3) orthorhombic SrMgSi-type GdCoGa (Pnma) 8 ; 4) orthorhombic CeCu2-type GdCo0.67Ga1.33 (Imma) 9 ; and 5) hexagonal AlB2-type GdGa2 (P6/mmm) 10 , suggesting that the structural types change regularly with an x interval of 1/6 or 1/3 for Gd(Co1-xGax)2. To explore this system in greater details, Gd(Co1-xGax)2 (x = 0, 1/6, 1/3, 1/2, 2/3, 5/6, and 1) alloys were prepared in this work.…”

Section: Introductionmentioning

confidence: 99%

Gd(Co 1-x Ga x ) 2 : Synthesis, crystal structures, and investigation of structural transformations and magnetic properties

Yuan

Toombs

Miller

et al. 2018

Journal of Solid State Chemistry

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Gd(Co1-xGax)2 (x = 0, 1/6, 1/3, 1/2, 2/3, 5/6, and 1) phases were synthesized by arc melting the constituent elements and subsequent annealing. The samples were characterized by powder and single crystal X-ray diffraction, magnetic measurements, and electronic structure calculations. An interesting structural sequence was obtained: cubic MgCu2-type structure for x = 0 and 1/6; MgZn2-type structure for x = 1/3; orthorhombic SrMgSi-type structure for x = ½; orthorhombic CeCu2-type structure for x = 2/3; hexagonal AlB2-type structure for x = 5/6 and 1.Tight-binding linear-muffin-tin orbital (TB-LMTO) calculations were performed on GdCo2, GdCoGa, and GdGa2 to trace the origin of their structural transformations, which appear to be driven by the changes in the valence electron count (VEC). In addition, some conclusions of these fully stoichiometric compounds were obtained from the rigid band model. GdGa2 (x = 1) is antiferromagnetic, while the other ones are either ferrimagnetic or ferromagnetic. TC of Gd(Co1-xGax)2 decreases monotonically with the increasing Ga content, suggesting that promising room temperature (RT) magnetocaloric materials could be obtained between x = 1/6 and x = 1/3.

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“…It is well known that rare earth (R) alloys have been widely used for their excellent chemical, physical and microstructure performance, and rare earth-transition metal(R-T) intermetallics show an important group of compounds with interesting magnetic and hydrogen storage properties [1,2]. The X-ray diffraction patterns of many new phases in the R-T intermetallics system have not been extensively studied.…”

Section: Introductionmentioning

confidence: 99%

X-Ray Powder Diffraction Data and Crystal Refinement of a New Compound AlCrNi<sub>3</sub>Pr

Liu

Liang

Chang

et al. 2016

MSF

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Rare earth-transition metal (R-T) intermetallics have been well used because of their excellent properties. The X-ray diffraction patterns of many new phases in the R-T system have not been extensively studied. A new compound AlCrNi3Pr was prepared by arc melting using non-consumable tungsten electrode under argon atmosphere, and then annealed at 1023K for 30 days. The X-ray powder diffraction data of AlCrNi3Pr was collected on a Rigaku SmartLab X-ray powder diffractometer. The powder patterns of the compound were indexed, and the structure refinement by using Rietveld method indicated that the AlCrNi3Pr compound crystallized in the hexagonal structure, space group P6/mmm (No.191) with PrNi5 structure type, a=b=5.0553(9) Ǻ, c=4.0763(6) Ǻ, V=90.22Ǻ3, Z=1, ρx=7.288g cm-3, the Smith–Snyder FOM F30=279.1(0.0044, 32) and the intensity ratio RIR=1.23.

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Crystal structure, thermal expansion and electrical properties of GdCo0.67Ga1.33 compound

Cited by 3 publications

References 10 publications

Crystal structure and magnetic properties of ternary Al₃CoNd₂ compound

Crystal structure and magnetic properties of ternary Al₃CoNd₂ compound

Gd(Co 1-x Ga x ) 2 : Synthesis, crystal structures, and investigation of structural transformations and magnetic properties

X-Ray Powder Diffraction Data and Crystal Refinement of a New Compound AlCrNi<sub>3</sub>Pr

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Crystal structure, thermal expansion and electrical properties of GdCo0.67Ga1.33 compound

Cited by 3 publications

References 10 publications

Crystal structure and magnetic properties of ternary Al3CoNd2 compound

Crystal structure and magnetic properties of ternary Al3CoNd2 compound

Gd(Co 1-x Ga x ) 2 : Synthesis, crystal structures, and investigation of structural transformations and magnetic properties

X-Ray Powder Diffraction Data and Crystal Refinement of a New Compound AlCrNi<sub>3</sub>Pr

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Crystal structure and magnetic properties of ternary Al₃CoNd₂ compound

Crystal structure and magnetic properties of ternary Al₃CoNd₂ compound