Crystal Structure, Magnetic, Electronic, and Thermal Transport Properties of Ternary Compounds REReB<sub>4</sub> (RE = Ce, Gd–Er, Yb)

Abramchuk, Mykola; Schnelle, Walter; Veremchuk, Igor; Leithe‐Jasper, Andreas; Grin, Yuri; Gumeniuk, Roman

doi:10.1002/ejic.201501038

Cited by 7 publications

(3 citation statements)

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“…Also, the metal atoms are positioned between the boron sheets that leads to the donating valence electrons of metal to the boron sheets [12]. There are more than 100 representatives for YCrB 4 type boron structures [13] having particular physical properties such as superconductivity, high mechanical strength, magnetic transitions and semiconducting behavior [14][15][16]. These structures could be employed in many technological applications such as thermoelectric and magnetic applications.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, REAlB 4 where RE is Tm, Yb and Lu [17], have been synthesized and their hardness and magnetic susceptibility have been measured that show none of the materials have superconductivity. In addition, rare-earth rhenium borides REReB 4 (RE=Ce, Gd-Er, Yb) [16] have been examined and it has been found that these materials are metallic materials which have low thermopowers and high thermal conductivities. Moreover, YCrB 4 [18] has been studied to reveal its electronic properties theoretically and it has been found that YCrB 4 is a narrow band gap semiconductor.…”

Section: Introductionmentioning

confidence: 99%

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Electronic, mechanical and lattice dynamical properties of YXB₄ (X = Cr, Mn, Fe, and Co) compounds

Candan¹,

Sürücü²,

Gençer³

2019

Phys. Scr.

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In this study, the physical such as structural, electronic, anisotropic elastic and lattice dynamic properties of YXB4 (X = Cr, Mn, Fe and Co) compounds have been investigated. The electronic properties including band structure and corresponding partial density of states for YXB4 have been calculated. YFeB4 and YCoB4 compounds are found to have metallic behavior while YCrB4 and YMnB4 have semiconductor behavior. Also, the compounds are found to be as non-magnetic materials. The calculated elastic constants indicate that these materials are mechanically stable due to satisfying Born stability criteria. In addition, the second order elastic constants and related polycrystalline elastic moduli (e.g. shear modulus, Young’s modulus, Poisson’s ratio, Debye temperature, sound velocities) are determined and the results are discussed in detail. The mechanical anisotropy is discussed using several anisotropy indexes and two-dimensional and three-dimensional surface constructions are obtained. All the compounds have dominantly covalent bonding and they are brittle materials. YCrB4 is found to be as a super hard material. YFeB4, YCoB4 and YMnB4 are found to be as hard materials. The dynamical stability of these compounds has been studied and it has been found that YCoB4 is dynamically unstable. In addition, the thermodynamic properties (heat capacity, free energy, etc) of these compounds have been obtained and discussed in detail.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electronic, mechanical and lattice dynamical properties of YXB₄ (X = Cr, Mn, Fe, and Co) compounds

Candan¹,

Sürücü²,

Gençer³

2019

Phys. Scr.

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“…In both cases an increase of the power factor by only a factor of 2 was observed. Further studies on the isostructural RE ReB 4 ( RE = Ce, Gd–Er, Yb) revealed them to be simple metals . Therefore, a search for new higher borides with good TE efficiency remains a challenging task.…”

Section: Introductionmentioning

confidence: 99%

CeMo₂B₅: A New Type of Arrangement of Puckered Boron Hexagonal Rings

et al. 2019

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REMo 2 B 5 (RE = Ce, Pr, Nd) and CeW 2 B 5 have been synthesized by arc melting with further annealing at 1300°C. CeMo 2 B 5 crystallizes in a new structure type with space group Pnma, a = 11.0298(2) Å, b = 3.12080(5) Å, c = 9.9594(2) Å, Z = 4. Its structural arrangement reveals puckered [B 6 ]-hexagonal rings, trigonal-prismatic-and empty pyramidal-tetrahedralslabs. The structure can be related to the derivatives of AlB 2 and CrB prototypes. The boron atoms form a two-dimensional network of corrugated ribbons, each composed of four edgelinked [B 6 ] rings infinitely extending along the b-axis. CeMo 2 B 5[a]

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ChemInform Abstract: Crystal Structure, Magnetic, Electronic, and Thermal Transport Properties of Ternary Compounds REReB₄ (RE: Ce, Gd—Er, Yb).

Abramchuk¹,

Schnelle²,

Veremchuk³

et al. 2016

ChemInform

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Crystal Structure, Magnetic, Electronic, and Thermal Transport Properties of Ternary Compounds REReB 4 (RE: Ce, Gd-Er, Yb). -LnReB4 with Ln: Tb-Er, Yb are synthesized from the elements by arc-melting and subsequent annealing at temperatures between 1073 and 1823 K for 12-700 h. CeReB 4 is prepared from mixtures of CeB 4 and rhenium powder by spark plasma sintering (1673 K, 5 h) followed by annealing at 1673 K for 2 d. The samples are characterized by powder XRD, magnetic and electronic transport measurements, and DFT calculations. The title compounds crystallize with the YCrB 4 structure type in the space group Pbam (Z = 4). The Tb, Ho, Er, and Yb containing compounds are Curie-Weiss paramagnets. LnReB 4 (Ln: Ce, Tb, Ho) are metallic materials with low thermopowers and relatively high thermal conductivities. -(ABRAMCHUK, M.; SCHNELLE, W.; VEREMCHUK, I.; LEITHE-JASPER, A.; GRIN, Y.; GUMENIUK*, R.; Eur. J. Inorg. Chem. 2016, 1, 161-168, http://dx.

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Crystal Structure, Magnetic, Electronic, and Thermal Transport Properties of Ternary Compounds REReB₄ (RE = Ce, Gd–Er, Yb)

Cited by 7 publications

References 50 publications

Electronic, mechanical and lattice dynamical properties of YXB₄ (X = Cr, Mn, Fe, and Co) compounds

Electronic, mechanical and lattice dynamical properties of YXB₄ (X = Cr, Mn, Fe, and Co) compounds

CeMo₂B₅: A New Type of Arrangement of Puckered Boron Hexagonal Rings

ChemInform Abstract: Crystal Structure, Magnetic, Electronic, and Thermal Transport Properties of Ternary Compounds REReB₄ (RE: Ce, Gd—Er, Yb).

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Crystal Structure, Magnetic, Electronic, and Thermal Transport Properties of Ternary Compounds REReB4 (RE = Ce, Gd–Er, Yb)

Cited by 7 publications

References 50 publications

Electronic, mechanical and lattice dynamical properties of YXB4 (X = Cr, Mn, Fe, and Co) compounds

Electronic, mechanical and lattice dynamical properties of YXB4 (X = Cr, Mn, Fe, and Co) compounds

CeMo2B5: A New Type of Arrangement of Puckered Boron Hexagonal Rings

ChemInform Abstract: Crystal Structure, Magnetic, Electronic, and Thermal Transport Properties of Ternary Compounds REReB4 (RE: Ce, Gd—Er, Yb).

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Crystal Structure, Magnetic, Electronic, and Thermal Transport Properties of Ternary Compounds REReB₄ (RE = Ce, Gd–Er, Yb)

Electronic, mechanical and lattice dynamical properties of YXB₄ (X = Cr, Mn, Fe, and Co) compounds

Electronic, mechanical and lattice dynamical properties of YXB₄ (X = Cr, Mn, Fe, and Co) compounds

CeMo₂B₅: A New Type of Arrangement of Puckered Boron Hexagonal Rings

ChemInform Abstract: Crystal Structure, Magnetic, Electronic, and Thermal Transport Properties of Ternary Compounds REReB₄ (RE: Ce, Gd—Er, Yb).