Antiferromagnetic Order in the Half-Heusler Phase TbPdBi

Pavlosiuk, Orest; Kleinert, Maja; Wiśniewski, Piotr; Kaczorowski, D.

doi:10.12693/aphyspola.133.498

Cited by 6 publications

(7 citation statements)

References 14 publications

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“…In recent years, the on-going intense studies on various RE-based HH phases have been focused on their other remarkable properties, like large magnetocaloric effect, huge magnetoresistance, superconductivity, presence of Dirac states, etc. [19,20,21,22,23,24,25,26].…”

Section: Introductionmentioning

confidence: 99%

Thermal and Electronic Transport Properties of the Half-Heusler Phase ScNiSb

et al. 2019

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Thermoelectric properties of the half-Heusler phase ScNiSb (space group F 4 ¯ 3m) were studied on a polycrystalline single-phase sample obtained by arc-melting and spark-plasma-sintering techniques. Measurements of the thermopower, electrical resistivity, and thermal conductivity were performed in the wide temperature range 2–950 K. The material appeared as a p-type conductor, with a fairly large, positive Seebeck coefficient of about 240 μV K−1 near 450 K. Nevertheless, the measured electrical resistivity values were relatively high (83 μΩm at 350 K), resulting in a rather small magnitude of the power factor (less than 1 × 10−3 W m−1 K−2) in the temperature range examined. Furthermore, the thermal conductivity was high, with a local minimum of about 6 W m−1 K−1 occurring near 600 K. As a result, the dimensionless thermoelectric figure of merit showed a maximum of 0.1 at 810 K. This work suggests that ScNiSb could be a promising base compound for obtaining thermoelectric materials for energy conversion at high temperatures.

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Section: Introductionmentioning

confidence: 99%

Thermal and Electronic Transport Properties of the Half-Heusler Phase ScNiSb

et al. 2019

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“…In the YbNiSb and Yb 1.3 Ni 0.9 Sb 0.8 samples, weak peaks of Ni 5 Sb 2 were found, which is consistent with the compositional analysis from EDX (shown in Figure ); this impurity also exists in other reported rare-earth-based HH alloys. , An extra impurity was observed in the YbNiSb sample (Figure S2) that might be a mixture of Yb 11 Sb 10 and Yb 5 Sb 3 , and its composition varies on a small scale. Hence, this impurity phase was not included in the structural refinement of YbNiSb (Figure S1) because of the uncertainty in its composition and crystal structure.…”

Section: Resultsmentioning

confidence: 99%

“…Rare-earth-based HH (RE-HH) alloys, most of which are p-type narrow-gap semiconductors with intrinsically low thermal conductivity, are potential thermoelectric candidates. − Previous studies on RE-HH alloys mostly focused on their magnetic and superconductive features, such as giant magnetoresistance, large magnetocaloric effect, superconductivity, and heavy-fermion behavior. − In contrast, the exploration of RE-HH in the TE field is in its infancy, and only a few papers have reported the TE properties of several primary RE-HH alloys, e.g., DyNiSb, ErNiSb, TmNiSb, and LuNiSb, demonstrating their potential as TE materials because of their rather lower intrinsic thermal conductivity (4–6 W m –1 K –1 at RT) , compared to those d-electron counterparts (e.g., ZrCoSb). Their low lattice thermal conductivity can be attributed to increased phonon scattering caused by an intrinsic disorder in their lattice or the presence of impurities .…”

Section: Introductionmentioning

confidence: 99%

Discovery of YbNiSb-Based Half-Heusler Alloys as Promising Thermoelectric Materials

Huang

Liu

et al. 2022

ACS Appl. Energy Mater.

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Half-Heusler materials are promising candidates for high-temperature power generation and have relatively high lattice thermal conductivity compared to other thermoelectric material systems. In this work, we report novel p-type YbNiSbbased half-Heusler alloys with a low lattice thermal conductivity (∼3.6 W m −1 K −1 at 340 K) that resulted from their large Gruneisen parameter, low sound speed, and low Debye temperature. All YbNiSb-based alloys exhibit a high carrier mobility of 30−50 cm 2 V −1 s −1 at room temperature because of their relatively small effective mass. Importantly, the structural analysis reveals that Yb-rich Yb 1.3 Ni 0.9 Sb 0.8 exhibits Yb/Ni and Yb/Sb substitution, indicating a wide homogeneity region of the YbNiSb phase experimentally. The adjustable Yb and Ni contents in YbNiSb-based alloys can modify the band structure around the Fermi level and significantly affect electrical transport properties. Additionally, by doping Ta at Yb sites, the carrier concentration and lattice thermal conductivity of these alloys can be manipulated. Consequently, a peak zT value of 0.45 at 823 K was achieved for Yb 0.95 Ta 0.05 NiSb. Our work demonstrates that YbNiSb-based alloys are promising p-type thermoelectric materials and suggests the possibility of exploring novel thermoelectric alloys in rare-earth nickel pnictides via tuning their composition and crystal structure.

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“…Compounds of RPdSb show formation into multiple crystal structures; compounds with R=Ce-Nd, Sm, Gd-Dy crystallize in the CaIn2 hexagonal crystal structure, EuPdSb crystallizes in TiNiSi type orthorhombic crystal structure and compounds with R=Ho, Er, Tm crystallize in MgAgAs type cubic crystal structure [272,273]. RPdBi (R=La-Nd, Sm Gd-Lu) compounds crystallize in MgAgAs type cubic crystal structure [274][275][276].…”

Section: Rpdx Compoundsmentioning

confidence: 99%

“…The superconducting phase in CePdBi is possibly originated from atomic disorder, which is a typical feature of Heusler alloys. Single crystal half Heusler RPdBi (R= Y, Gd-Er) were studied for their magnetic and transport properties [274,275,308]. HoPdBi and LuPdBi were found to show superconductivity below 0.7 and 1.8 K, whereas compounds with R= Gd-Er undergo AFM ordering below TN= 12.8, 5.3, 3.7, 1.9 and 1.2 K, respectively.…”

Section: Magnetic Measurements Show Lapdsi Is Non-magnetic Down To Lo...mentioning

confidence: 99%