Synthesis and characterization of electron and hole doped ternary palladium oxide: Sr1−A Pd3O4 (A = Na, Bi)

Ozawa, Tadashi C.; Matsushita, A.; Hidaka, Y.; Taniguchi, Takashi; Mizusaki, S.; Nagata, Y.; Noro, Y.; Samata, H.

doi:10.1016/j.jallcom.2007.03.137

Cited by 10 publications

(13 citation statements)

References 22 publications

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“…For SrPd 3 O 4 the Seebeck coefficient increases with rise in temperature up to 300 K; then it decreases with further increase in temperature and follows the experimental trend. Our theoretical results are consistent with the experimental results [4,49]. The calculated Seebeck coefficients for both the compounds are positive, which indicate that the majority carrier in both compounds are holes; hence we predict that these compounds could be used as good TE materials.…”

Section: Thermoelectric Propertiessupporting

confidence: 89%

“…Both the compounds are isostructural and narrow band gap semiconductors. However, isovalent ion substitution makes CaPd 3 O 4 a good TE material [3,4]. The substitution of sodium (Na) by Sr in SrPd 3 O 4 may enhance the figure of merit [4].…”

Section: Introductionmentioning

confidence: 99%

“…However, isovalent ion substitution makes CaPd 3 O 4 a good TE material [3,4]. The substitution of sodium (Na) by Sr in SrPd 3 O 4 may enhance the figure of merit [4]. CaPd 3 O 4 is a good candidate for being an excitonic insulator and used in switching and sensing devices [5].…”

Section: Introductionmentioning

confidence: 99%

“…Wnuk et al [9] presented a chemical analysis of the CaPd 3 O 4 material very clearly; the material possesses 9.24% * Author for correspondence (zahidf82@gmail.com) Ca and 75.76% Pd, while the actual formula corresponds to 9.47% Ca and 75.41% Pd. Both materials exhibit semiconductor nature at room temperature, having resistivity on the order of 0.1 cm [3,4,10]. The resistivity of CaPd 3 O 4 decreases as temperature rises and the TE effect shows that the carriers are holes [9].…”

Section: Introductionmentioning

confidence: 99%

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First-principle studies of the ternary palladates CaPd3O4 and SrPd3O4

et al. 2016

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Ternary palladates CaPd 3 O 4 and SrPd 3 O 4 have been studied theoretically using density functional theory approach. The calculated structural properties are consistent with the experimental findings. Mechanical properties show that these compounds are elastically stable, anisotropic and ductile in nature. The electronic properties reveal that they are narrow band gap semiconductors with band gaps 0.12 and 0.10 eV, correspondingly. Both materials are optically active in the infrared ranges of the electromagnetic spectrum. Narrow band gap semiconductors are efficient thermoelectric (TE) materials; therefore, TE properties are also studied and discussed. Furthermore, DFT and post-DFT calculations confirm the paramagnetic nature of these compounds.

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Section: Thermoelectric Propertiessupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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First-principle studies of the ternary palladates CaPd3O4 and SrPd3O4

et al. 2016

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“…The energy level of the d x 2 −y 2 orbital of Pd 2+ is higher than those of the other 4d orbitals. In this case, two holes with opposite spin occupy the d x 2 −y 2 orbital establishing the low spin state, and thus no spin moment is expected from Pd 2+ like that in other palladium oxides [21,[24][25][26][27]. Therefore, only Ln 3+ ions make a major contribution to the magnetism of Ln 2 BaPdO 5 .…”

Section: Temperature Dependence Of Magnetizationmentioning

confidence: 96%

Magnetization and specific heat measurement of the Shastry–Sutherland lattice compounds: Ln2BaPdO5 (Ln = La, Pr, Nd, Sm, Eu, Gd, Dy, Ho)

Ozawa

Taniguchi

Kawaji

et al. 2008

Journal of Alloys and Compounds

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ChemInform Abstract: Synthesis and Characterization of Electron and Hole Doped Ternary Palladium Oxide: Sr_1‐xA_xPd₃O₄ (A: Na, Bi).

et al. 2008

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≤ 0.2 are synthesized from stoichiometric mixtures of SrCO3, PdO, 30 h) and characterized by powder XRD and electrical and magnetic measurements. All the doped phases crystallize in the cubic space group Pm3n (NaPt3O4-type structure). Substitutions of Sr 2+ by Na + and Bi 3+ introduce hole and electron carriers, respectively. With increasing dopant concentration the effective magnetic moment, electrical conductivity, and carrier concentration of the phases increase, and the thermopower decreases. Among the samples studied, Sr0.8Na0.2Pd3O4 exhibits the highest room temp. power factor. -(OZAWA*, T. C.; MATSUSHITA, A.; HIDAKA, Y.; TANIGUCHI, T.; MIZUSAKI, S.; NAGATA, Y.; NORO, Y.; SAMATA, H.; J.

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Synthesis and characterization of electron and hole doped ternary palladium oxide: Sr1−A Pd3O4 (A = Na, Bi)

Cited by 10 publications

References 22 publications

First-principle studies of the ternary palladates CaPd3O4 and SrPd3O4

First-principle studies of the ternary palladates CaPd3O4 and SrPd3O4

Magnetization and specific heat measurement of the Shastry–Sutherland lattice compounds: Ln2BaPdO5 (Ln = La, Pr, Nd, Sm, Eu, Gd, Dy, Ho)

ChemInform Abstract: Synthesis and Characterization of Electron and Hole Doped Ternary Palladium Oxide: Sr_1‐xA_xPd₃O₄ (A: Na, Bi).

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Synthesis and characterization of electron and hole doped ternary palladium oxide: Sr1−A Pd3O4 (A = Na, Bi)

Cited by 10 publications

References 22 publications

First-principle studies of the ternary palladates CaPd3O4 and SrPd3O4

First-principle studies of the ternary palladates CaPd3O4 and SrPd3O4

Magnetization and specific heat measurement of the Shastry–Sutherland lattice compounds: Ln2BaPdO5 (Ln = La, Pr, Nd, Sm, Eu, Gd, Dy, Ho)

ChemInform Abstract: Synthesis and Characterization of Electron and Hole Doped Ternary Palladium Oxide: Sr1‐xAxPd3O4 (A: Na, Bi).

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ChemInform Abstract: Synthesis and Characterization of Electron and Hole Doped Ternary Palladium Oxide: Sr_1‐xA_xPd₃O₄ (A: Na, Bi).