Synthesis and electrical conductivity of Na3B20

Haruhiko Morito; Syouta Shibano; Takahiro Yamada; Takuji Ikeda; Masami Terauchi; Rodion V. Belosludov; Hisanori Yamane

doi:10.1016/j.solidstatesciences.2020.106166

Synthesis and electrical conductivity of Na₃B₂₀

Haruhiko Morito, Syouta Shibano, Takahiro Yamada, Takuji Ikeda, Masami Terauchi, Rodion V. Belosludov, Hisanori Yamane

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Na₃B₂₀ powder was prepared by heating amorphous B and Na in a BN crucible at 1173–1373 K. Na₂B₂₉, which was formed from Na₃B₂₀, was contained in the products obtained at and above 1453 K. Black square plate-like Na₃B₂₀ single crystals with a size of approximately 40–100 μm were grown by heating crystalline B and Na at 1223 K for 48 h. Na₃B₂₀ was relatively unstable against the moisture in air, and gradually converted into H₃BO₃. A polycrystalline bulk Na₃B₂₀ sample with a relative density of 73.4% was obtained by heating a compact of ball-milled amorphous B powder in Na vapor at 1223 K for 24 h. The electrical conductivity of the bulk sample was 1.15 × 10⁶ S/m at 295 K.

Original language	English
Article number	106166
Journal	Solid State Sciences
Volume	102
DOIs	https://doi.org/10.1016/j.solidstatesciences.2020.106166
Publication status	Published - 2020 Apr

Keywords

Bulk sample
Electrical conductivity
Single crystal
Sodium borides

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10.1016/j.solidstatesciences.2020.106166

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@article{04d0409d7f564c348594d7ef4931904f,

title = "Synthesis and electrical conductivity of Na3B20 ",

abstract = "Na3B20 powder was prepared by heating amorphous B and Na in a BN crucible at 1173–1373 K. Na2B29, which was formed from Na3B20, was contained in the products obtained at and above 1453 K. Black square plate-like Na3B20 single crystals with a size of approximately 40–100 μm were grown by heating crystalline B and Na at 1223 K for 48 h. Na3B20 was relatively unstable against the moisture in air, and gradually converted into H3BO3. A polycrystalline bulk Na3B20 sample with a relative density of 73.4% was obtained by heating a compact of ball-milled amorphous B powder in Na vapor at 1223 K for 24 h. The electrical conductivity of the bulk sample was 1.15 × 106 S/m at 295 K.",

keywords = "Bulk sample, Electrical conductivity, Single crystal, Sodium borides",

author = "Haruhiko Morito and Syouta Shibano and Takahiro Yamada and Takuji Ikeda and Masami Terauchi and Belosludov, {Rodion V.} and Hisanori Yamane",

note = "Funding Information: The authors would like to thank T. Kamaya for the EPMA. This work was supported by Japan Science and Technology Agency ( JST ) CREST , grant number JPMJCR19J1 , Japan. Publisher Copyright: {\textcopyright} 2020 Elsevier Masson SAS",

year = "2020",

month = apr,

doi = "10.1016/j.solidstatesciences.2020.106166",

language = "English",

volume = "102",

journal = "Solid State Sciences",

issn = "1293-2558",

publisher = "Elsevier Masson s.r.l.",

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T1 - Synthesis and electrical conductivity of Na3B20

AU - Morito, Haruhiko

AU - Shibano, Syouta

AU - Yamada, Takahiro

AU - Ikeda, Takuji

AU - Terauchi, Masami

AU - Belosludov, Rodion V.

AU - Yamane, Hisanori

N1 - Funding Information: The authors would like to thank T. Kamaya for the EPMA. This work was supported by Japan Science and Technology Agency ( JST ) CREST , grant number JPMJCR19J1 , Japan. Publisher Copyright: © 2020 Elsevier Masson SAS

PY - 2020/4

Y1 - 2020/4

N2 - Na3B20 powder was prepared by heating amorphous B and Na in a BN crucible at 1173–1373 K. Na2B29, which was formed from Na3B20, was contained in the products obtained at and above 1453 K. Black square plate-like Na3B20 single crystals with a size of approximately 40–100 μm were grown by heating crystalline B and Na at 1223 K for 48 h. Na3B20 was relatively unstable against the moisture in air, and gradually converted into H3BO3. A polycrystalline bulk Na3B20 sample with a relative density of 73.4% was obtained by heating a compact of ball-milled amorphous B powder in Na vapor at 1223 K for 24 h. The electrical conductivity of the bulk sample was 1.15 × 106 S/m at 295 K.

AB - Na3B20 powder was prepared by heating amorphous B and Na in a BN crucible at 1173–1373 K. Na2B29, which was formed from Na3B20, was contained in the products obtained at and above 1453 K. Black square plate-like Na3B20 single crystals with a size of approximately 40–100 μm were grown by heating crystalline B and Na at 1223 K for 48 h. Na3B20 was relatively unstable against the moisture in air, and gradually converted into H3BO3. A polycrystalline bulk Na3B20 sample with a relative density of 73.4% was obtained by heating a compact of ball-milled amorphous B powder in Na vapor at 1223 K for 24 h. The electrical conductivity of the bulk sample was 1.15 × 106 S/m at 295 K.

KW - Bulk sample

KW - Electrical conductivity

KW - Single crystal

KW - Sodium borides

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DO - 10.1016/j.solidstatesciences.2020.106166

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SN - 1293-2558

VL - 102

JO - Solid State Sciences

JF - Solid State Sciences

M1 - 106166

ER -

Synthesis and electrical conductivity of Na₃B₂₀

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Keywords

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