Synthesis and magnetic properties of (Ba,Bi)1.54Rh 8O16 hollandite

T. Klimczuk; Wei Li Lee; H. W. Zandbergen; R. J. Cava

doi:10.1016/j.materresbull.2004.05.012

Synthesis and magnetic properties of (Ba,Bi)_1.54Rh ₈O₁₆ hollandite

T. Klimczuk, Wei Li Lee, H. W. Zandbergen, R. J. Cava

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

11 Scopus citations

Abstract

The synthesis, structure and electrical and magnetic properties of (Ba,Bi)_1.54Rh₈O₁₆ hollandite are discussed. The addition of Bi stabilizes the Ba-Rh hollandite, otherwise not found under our synthesis conditions. The compound crystallizes in the monoclinic space group I2/m, a = 9.425(5) Å, b = 10.425(4) Å, c = 3.160(1) Å, γ = 94.11(5). Electron diffraction and structure imaging show that the (Ba,Bi) columns along the tunnels are incommensurate with the Rh₈O ₁₆ framework, and analysis of the electron diffraction and elemental analysis allow the formula to be determined as Ba_1.21Bi _0.33Rh₈O₁₆. The compound shows Curie-Weiss paramagnetism, and we compare its susceptibility to that of Rh₂O ₃. Polycrystalline samples show a negative dρ/dT between 0.3 and 300K. No superconductivity is observed down to 0.3K.

Original language	English (US)
Pages (from-to)	1671-1677
Number of pages	7
Journal	Materials Research Bulletin
Volume	39
Issue number	11
DOIs	https://doi.org/10.1016/j.materresbull.2004.05.012
State	Published - Sep 1 2004

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Keywords

A. Oxides
B. Chemical synthesis
C. Electron diffraction
D. Electrical properties
D. Magnetic properties

Access to Document

10.1016/j.materresbull.2004.05.012

Cite this

@article{9c110d1db3974f09ba6d6f4e7089e37b,

title = "Synthesis and magnetic properties of (Ba,Bi)1.54Rh 8O16 hollandite",

abstract = "The synthesis, structure and electrical and magnetic properties of (Ba,Bi)1.54Rh8O16 hollandite are discussed. The addition of Bi stabilizes the Ba-Rh hollandite, otherwise not found under our synthesis conditions. The compound crystallizes in the monoclinic space group I2/m, a = 9.425(5) {\AA}, b = 10.425(4) {\AA}, c = 3.160(1) {\AA}, γ = 94.11(5). Electron diffraction and structure imaging show that the (Ba,Bi) columns along the tunnels are incommensurate with the Rh8O 16 framework, and analysis of the electron diffraction and elemental analysis allow the formula to be determined as Ba1.21Bi 0.33Rh8O16. The compound shows Curie-Weiss paramagnetism, and we compare its susceptibility to that of Rh2O 3. Polycrystalline samples show a negative dρ/dT between 0.3 and 300K. No superconductivity is observed down to 0.3K.",

keywords = "A. Oxides, B. Chemical synthesis, C. Electron diffraction, D. Electrical properties, D. Magnetic properties",

author = "T. Klimczuk and Lee, {Wei Li} and Zandbergen, {H. W.} and Cava, {R. J.}",

note = "Funding Information: This research was supported by the US Department of Energy, Basic Energy Sciences, grant DOE FG02-98-ER45706.",

year = "2004",

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T1 - Synthesis and magnetic properties of (Ba,Bi)1.54Rh 8O16 hollandite

AU - Klimczuk, T.

AU - Lee, Wei Li

AU - Zandbergen, H. W.

AU - Cava, R. J.

N1 - Funding Information: This research was supported by the US Department of Energy, Basic Energy Sciences, grant DOE FG02-98-ER45706.

PY - 2004/9/1

Y1 - 2004/9/1

N2 - The synthesis, structure and electrical and magnetic properties of (Ba,Bi)1.54Rh8O16 hollandite are discussed. The addition of Bi stabilizes the Ba-Rh hollandite, otherwise not found under our synthesis conditions. The compound crystallizes in the monoclinic space group I2/m, a = 9.425(5) Å, b = 10.425(4) Å, c = 3.160(1) Å, γ = 94.11(5). Electron diffraction and structure imaging show that the (Ba,Bi) columns along the tunnels are incommensurate with the Rh8O 16 framework, and analysis of the electron diffraction and elemental analysis allow the formula to be determined as Ba1.21Bi 0.33Rh8O16. The compound shows Curie-Weiss paramagnetism, and we compare its susceptibility to that of Rh2O 3. Polycrystalline samples show a negative dρ/dT between 0.3 and 300K. No superconductivity is observed down to 0.3K.

AB - The synthesis, structure and electrical and magnetic properties of (Ba,Bi)1.54Rh8O16 hollandite are discussed. The addition of Bi stabilizes the Ba-Rh hollandite, otherwise not found under our synthesis conditions. The compound crystallizes in the monoclinic space group I2/m, a = 9.425(5) Å, b = 10.425(4) Å, c = 3.160(1) Å, γ = 94.11(5). Electron diffraction and structure imaging show that the (Ba,Bi) columns along the tunnels are incommensurate with the Rh8O 16 framework, and analysis of the electron diffraction and elemental analysis allow the formula to be determined as Ba1.21Bi 0.33Rh8O16. The compound shows Curie-Weiss paramagnetism, and we compare its susceptibility to that of Rh2O 3. Polycrystalline samples show a negative dρ/dT between 0.3 and 300K. No superconductivity is observed down to 0.3K.

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KW - C. Electron diffraction

KW - D. Electrical properties

KW - D. Magnetic properties

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