Crystallographic and magnetic descriptions of a novel erbium rich aluminide: Er10Co1+xAl3−x (x = 0.30)

Nasri, N.; Pasturel, Mathieu; Dorcet, Vincent; Belgacem, B.; Hassen, R. Ben; Tougait, Olivier

doi:10.1016/j.jallcom.2015.07.277

Cited by 14 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The structural entity of an Al 3 triangle (part of the RuAl 3 tetrahedron) is found e.g. in Sr 2 Au 6 Al 3 and Eu 2 Au 6 Al 3 , Sc 2 Pt 6 Al 15 or isostructural Eu 2 Pt 6 Al 15 , as well as in the RE 10 TAl 3 ,, (RE = Y, Ho, Tm, Lu; T = Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt) series. Transition metal triangles, similar to the Ru 3 triangles in the Ru 3 Al tetrahedron, were observed e.g.…”

Section: Resultsmentioning

confidence: 80%

“…In the crystal structure, one crystallographically independent Ho, two Ru, and two Al sites are found. The coordination environments for all sites are depicted in 40 as well as in the RE 10 TAl 3 41,74,75 (RE = Y, Ho, Tm, Lu; T = Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt) series. Transition metal triangles, similar to the Ru 3 triangles in the Ru 3 Al tetrahedron, were observed e.g.…”

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Intermetallic RE₆T₅Al₇ Phases (RE = Sc, Y, Ce–Nd, Sm, Gd–Lu; T = Ru, Ir): Diversity in their Magnetic, Magnetocaloric, and Critical Properties

et al. 2019

View full text Add to dashboard Cite

Over 20 new compounds of the RE6T5Al7 series (RE = Sc, Y, Ce–Nd, Sm, Gd–Lu; T = Ru, Ir; Yb6Ir5Ga7 type structure; superstructure of MgZn2; fully ordered Nb6.4Ir4Al7.6 type) have been synthesized. They crystallize in the hexagonal crystal system with space group P63/mcm. Their lattice parameters are in the ranges of a = 935–963 and c = 851–874 pm for the RE6Ru5Al7 and a = 913–966 and c = 825–865 pm for the RE6Ir5Al7 series. Four structures (Ho6Ru5Al7, Yb6Ru4.68(1)Al7.32(1), Sc6Ir5Al7, and Ho6Ir4.53(1)Al7.47(1)) have been refined from single-crystal data, indicating fully ordered structures for Ho6Ru5Al7 and Sc6Ir5Al7; however, T/Al mixing was observed on one crystallographic site for Ho6Ir4.53(1)Al7.47(1) and on two sites for Yb6Ru4.68(1)Al7.32(1). The Sc-, Y-, and Lu-containing compounds exhibit Pauli paramagnetism in line with a filled d band for Ru and Ir. Ce6Ru5Al7 exhibits mixed-valent behavior, while Yb6Ru5Al7 is solely trivalent. The other compounds exhibit paramagnetism and ferromagnetic phase transitions up to temperatures of T C = 83.4(1) K for Gd6Ru5Al7. In addition to the basic magnetic characterizations and studies of the electrical resistivity and heat capacity, the magnetocaloric properties of Gd6Ru5Al7, Tb6Ru5Al7, and Dy6Ru5Al7 have been investigated, revealing magnetic entropy changes of −ΔS M max = 6.2(1), 7.7(1), and 5.4(1) J kg–1 K–1 (0 → 5 T) and relative cooling powers RCP = 242, 207, and 135 J kg–1, respectively. For a deeper insight into the second-order magnetic phase transitions, the critical behavior was investigated according to the scaling hypothesis. The critical behavior of Gd6Ru5Al7 is in accordance with the mean-field theory; the critical exponents of Tb6Ru5Al7 and Dy6Ru5Al7, however, deviate strongly from this universality class. For comparison of the structural and magnetic properties, the thus far unstudied members of the RERuAl series (RE = Sc, Y, Sm, Gd–Lu; MgZn2 type) have additionally been prepared and characterized.

show abstract

Section: Resultsmentioning

confidence: 80%

Section: ■ Introductionmentioning

confidence: 99%

Intermetallic RE₆T₅Al₇ Phases (RE = Sc, Y, Ce–Nd, Sm, Gd–Lu; T = Ru, Ir): Diversity in their Magnetic, Magnetocaloric, and Critical Properties

et al. 2019

View full text Add to dashboard Cite

show abstract

“…2), leading to the general composition RE 10 TCd 3 , characterized for T = Fe, Co, Ni, Ru, Rh, Pd, Ir, Pt [4,25,31,32]. Recently also some aluminides RE 10 TAl 3 (RE = Y, Ho, Er, Tm, Lu; T = Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt) [33,34] were reported.…”

Section: Crystal Chemistrymentioning

confidence: 99%

Osmium and magnesium: structural segregation in the rare earth-rich intermetallics RE ₄OsMg (RE=La–Nd, Sm) and RE ₉ TMg₄ (RE=Gd, Tb)

Block

Stein

Heletta

et al. 2019

Zeitschrift Für Naturforschung B

View full text Add to dashboard Cite

Ternary rare earth metal-rich intermetallic phases containing osmium and magnesium were obtained by induction melting of the elements in sealed niobium ampoules under argon followed by annealing in muffle furnaces. The large rare earth elements form the series of Gd4RhIn-type (F4̅3m) intermetallics RE4OsMg with RE = La–Nd and Sm, while the smaller rare earth metals gadolinium and terbium form the Y9CoMg4-type (P63/mmc) phases Gd9OsMg4 and Tb9OsMg4. All samples were characterized by X-ray powder diffraction (Guinier technique). The structures of Ce4Os0.973Mg1.027 (a = 1406.54(7) pm, wR2 = 0.0478), Nd4Os0.978Mg1.022 (a = 1402.00(7) pm, wR2 = 0.0463), Sm4Os0.920Mg1.080 (a = 1387.33(5) pm, wR2 = 0.0378) and Gd9OsMg4 (a = 971.01(5), c = 980.43(5) pm, wR2 = 0.0494) were refined from single-crystal X-ray diffractometer data. The three RE4OsMg phases show small degrees of Os/Mg mixing, as is frequently observed for Rh/In in Gd4RhIn-type intermetallics. The basic building units in both structures are osmium-centered RE6 trigonal prisms that are condensed with empty RE6 octahedra. The magnesium atoms in both types build Mg4 tetrahedra. The latter are isolated (312 pm Mg–Mg in Ce4OsMg) and incorporated within the three-dimensional network of prisms and octahedra in the RE4OsMg phases while one observes rows of corner- and face-sharing tetrahedra in Gd9OsMg4 (305 and 314 pm Mg–Mg). In both structure types direct Os–Mg bonding is not observed.

show abstract

ChemInform Abstract: Crystallographic and Magnetic Descriptions of a Novel Erbium Rich Aluminide: Er₁₀Co_1+xAl_3‐x (x = 0.30).

et al. 2015

View full text Add to dashboard Cite

30). -Er10Co1.3Al2.7 is prepared by arc melting of the elements followed by annealing (alumina crucible in evacuated silica ampoule, 1123 K, 1 week). The intermetallic compound crystallizes in a hexagonal ordered variant of the Co 2Al5--type (space group P6 3/mmc, Z = 2, single crystal XRD). The structure is described in detail. The magnetic behavior is dominated by an antiferromagnetic ordering observed at 12.7 K. -(NASRI, N.; PASTUREL*, M.; DORCET, V.; BELGACEM, B.; BEN HASSEN, R.; TOUGAIT, O.; J. Alloys Compd. 650 (2015) 528-532, http://dx.

show abstract

Crystallographic and magnetic descriptions of a novel erbium rich aluminide: Er10Co1+xAl3−x (x = 0.30)

Cited by 14 publications

References 27 publications

Intermetallic RE₆T₅Al₇ Phases (RE = Sc, Y, Ce–Nd, Sm, Gd–Lu; T = Ru, Ir): Diversity in their Magnetic, Magnetocaloric, and Critical Properties

Intermetallic RE₆T₅Al₇ Phases (RE = Sc, Y, Ce–Nd, Sm, Gd–Lu; T = Ru, Ir): Diversity in their Magnetic, Magnetocaloric, and Critical Properties

Osmium and magnesium: structural segregation in the rare earth-rich intermetallics RE ₄OsMg (RE=La–Nd, Sm) and RE ₉ TMg₄ (RE=Gd, Tb)

ChemInform Abstract: Crystallographic and Magnetic Descriptions of a Novel Erbium Rich Aluminide: Er₁₀Co_1+xAl_3‐x (x = 0.30).

Contact Info

Product

Resources

About

Crystallographic and magnetic descriptions of a novel erbium rich aluminide: Er10Co1+xAl3−x (x = 0.30)

Cited by 14 publications

References 27 publications

Intermetallic RE6T5Al7 Phases (RE = Sc, Y, Ce–Nd, Sm, Gd–Lu; T = Ru, Ir): Diversity in their Magnetic, Magnetocaloric, and Critical Properties

Intermetallic RE6T5Al7 Phases (RE = Sc, Y, Ce–Nd, Sm, Gd–Lu; T = Ru, Ir): Diversity in their Magnetic, Magnetocaloric, and Critical Properties

Osmium and magnesium: structural segregation in the rare earth-rich intermetallics RE 4OsMg (RE=La–Nd, Sm) and RE 9 TMg4 (RE=Gd, Tb)

ChemInform Abstract: Crystallographic and Magnetic Descriptions of a Novel Erbium Rich Aluminide: Er10Co1+xAl3‐x (x = 0.30).

Contact Info

Product

Resources

About

Intermetallic RE₆T₅Al₇ Phases (RE = Sc, Y, Ce–Nd, Sm, Gd–Lu; T = Ru, Ir): Diversity in their Magnetic, Magnetocaloric, and Critical Properties

Intermetallic RE₆T₅Al₇ Phases (RE = Sc, Y, Ce–Nd, Sm, Gd–Lu; T = Ru, Ir): Diversity in their Magnetic, Magnetocaloric, and Critical Properties

Osmium and magnesium: structural segregation in the rare earth-rich intermetallics RE ₄OsMg (RE=La–Nd, Sm) and RE ₉ TMg₄ (RE=Gd, Tb)

ChemInform Abstract: Crystallographic and Magnetic Descriptions of a Novel Erbium Rich Aluminide: Er₁₀Co_1+xAl_3‐x (x = 0.30).