Rapid low-temperature synthesis of superconducting (Ba,K)BiO3 using molten KOH

Masatsune Kato; Seigo Shitara; Ken Ichi Nemoto; Takefumi Minakawa; Takashi Noji; Yoji Koike

doi:10.1143/JJAP.48.010214

Rapid low-temperature synthesis of superconducting (Ba,K)BiO₃ using molten KOH

Masatsune Kato, Seigo Shitara, Ken Ichi Nemoto, Takefumi Minakawa, Takashi Noji, Yoji Koike

ENG - Applied Physics

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

3 Citations (Scopus)

Abstract

Polycrystalline samples of perovskite Ba_1-xK_xK _xBiO₃ with a wide range of x have successfully been synthesized in a quite short heating time of several minutes at a temperature as low as 290°C using molten KOH. The powder X-ray diffraction patterns have revealed the formation of well-crystallized Ba_1-xK _xBiO₃. The maximum value of the superconducting transition temperature Is ∼30 K observed at x ∼ 0.34 in the magnetic susceptibility measurements. The superconducting volume fraction drastically decreases for x < 0.37. These results are in good agreement with those of samples obtained by the conventional solid-state reaction method.

Original language	English
Article number	010214
Journal	Japanese journal of applied physics
Volume	48
Issue number	1
DOIs	https://doi.org/10.1143/JJAP.48.010214
Publication status	Published - 2009 Jan 20

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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title = "Rapid low-temperature synthesis of superconducting (Ba,K)BiO3 using molten KOH",

abstract = "Polycrystalline samples of perovskite Ba1-xKxK xBiO3 with a wide range of x have successfully been synthesized in a quite short heating time of several minutes at a temperature as low as 290°C using molten KOH. The powder X-ray diffraction patterns have revealed the formation of well-crystallized Ba1-xK xBiO3. The maximum value of the superconducting transition temperature Is ∼30 K observed at x ∼ 0.34 in the magnetic susceptibility measurements. The superconducting volume fraction drastically decreases for x < 0.37. These results are in good agreement with those of samples obtained by the conventional solid-state reaction method.",

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T1 - Rapid low-temperature synthesis of superconducting (Ba,K)BiO3 using molten KOH

AU - Kato, Masatsune

AU - Shitara, Seigo

AU - Nemoto, Ken Ichi

AU - Minakawa, Takefumi

AU - Noji, Takashi

AU - Koike, Yoji

PY - 2009/1/20

Y1 - 2009/1/20

N2 - Polycrystalline samples of perovskite Ba1-xKxK xBiO3 with a wide range of x have successfully been synthesized in a quite short heating time of several minutes at a temperature as low as 290°C using molten KOH. The powder X-ray diffraction patterns have revealed the formation of well-crystallized Ba1-xK xBiO3. The maximum value of the superconducting transition temperature Is ∼30 K observed at x ∼ 0.34 in the magnetic susceptibility measurements. The superconducting volume fraction drastically decreases for x < 0.37. These results are in good agreement with those of samples obtained by the conventional solid-state reaction method.

AB - Polycrystalline samples of perovskite Ba1-xKxK xBiO3 with a wide range of x have successfully been synthesized in a quite short heating time of several minutes at a temperature as low as 290°C using molten KOH. The powder X-ray diffraction patterns have revealed the formation of well-crystallized Ba1-xK xBiO3. The maximum value of the superconducting transition temperature Is ∼30 K observed at x ∼ 0.34 in the magnetic susceptibility measurements. The superconducting volume fraction drastically decreases for x < 0.37. These results are in good agreement with those of samples obtained by the conventional solid-state reaction method.

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