Electrical conductivity of non-stoichiometric Sr β-alumina single crystals prepared by a floating zone method

An Yu Zhang; Takaya Akashi; Takashi Goto

doi:10.1016/S0167-2738(02)00678-1

Electrical conductivity of non-stoichiometric Sr β-alumina single crystals prepared by a floating zone method

An Yu Zhang, Takaya Akashi, Takashi Goto

金属材料研究所・材料プロセス・評価研究部

研究成果: Article › 査読

3 被引用数 (Scopus)

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Non-stoichiometric Sr β-alumina single crystals were prepared in SrO-MgO-Al₂O₃ system by a floating zone (FZ) method. The range of non-stoichiometry was determined as Sr_1-0.25xMg_1-xAl_10+xO_17+0.25x, where 0 < x ≤ 0.41. The lattice parameters of a increased and c decreased with increasing SrO content in the solid solution range. The single crystals had a cleavage plane parallel to the (001) plane and growth direction. The electrical conductivity parallel and perpendicular to the cleavage plane showed maximum at x = 0.2 (i.e., 13.8 mol% SrO). The activation energy of electrical conductivity parallel to the cleavage plane (140 to 165 kJ/mol) was almost the same as that perpendicular to the cleavage plane (150 to 170 kJ/mol).

本文言語	English
ページ（範囲）	425-431
ページ数	7
ジャーナル	Solid State Ionics
巻	156
号	3-4
DOI	https://doi.org/10.1016/S0167-2738(02)00678-1
出版ステータス	Published - 2003 1月

ASJC Scopus subject areas

化学 (全般)
材料科学（全般）
凝縮系物理学

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10.1016/S0167-2738(02)00678-1

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@article{408f7465d9fd4d05a6850911154ac2be,

title = "Electrical conductivity of non-stoichiometric Sr β-alumina single crystals prepared by a floating zone method",

abstract = "Non-stoichiometric Sr β-alumina single crystals were prepared in SrO-MgO-Al2O3 system by a floating zone (FZ) method. The range of non-stoichiometry was determined as Sr1-0.25xMg1-xAl10+xO17+0.25x, where 0 < x ≤ 0.41. The lattice parameters of a increased and c decreased with increasing SrO content in the solid solution range. The single crystals had a cleavage plane parallel to the (001) plane and growth direction. The electrical conductivity parallel and perpendicular to the cleavage plane showed maximum at x = 0.2 (i.e., 13.8 mol% SrO). The activation energy of electrical conductivity parallel to the cleavage plane (140 to 165 kJ/mol) was almost the same as that perpendicular to the cleavage plane (150 to 170 kJ/mol).",

keywords = "Cell parameters, Electrical conductivity, Floating zone method, Single crystal, Single-phase region, Sr β-alumina",

author = "Zhang, {An Yu} and Takaya Akashi and Takashi Goto",

note = "Funding Information: One of the authors (Anyu Zhang) thanks the financial support from Japanese Monbusho foundation for foreign students. The single crystal specimens were synthesized by using the facility at Laboratory for Advanced Materials, Institute for Materials Research, Tohoku University.",

year = "2003",

month = jan,

doi = "10.1016/S0167-2738(02)00678-1",

language = "English",

volume = "156",

pages = "425--431",

journal = "Solid State Ionics",

issn = "0167-2738",

publisher = "Elsevier",

number = "3-4",

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TY - JOUR

T1 - Electrical conductivity of non-stoichiometric Sr β-alumina single crystals prepared by a floating zone method

AU - Zhang, An Yu

AU - Akashi, Takaya

AU - Goto, Takashi

N1 - Funding Information: One of the authors (Anyu Zhang) thanks the financial support from Japanese Monbusho foundation for foreign students. The single crystal specimens were synthesized by using the facility at Laboratory for Advanced Materials, Institute for Materials Research, Tohoku University.

PY - 2003/1

Y1 - 2003/1

N2 - Non-stoichiometric Sr β-alumina single crystals were prepared in SrO-MgO-Al2O3 system by a floating zone (FZ) method. The range of non-stoichiometry was determined as Sr1-0.25xMg1-xAl10+xO17+0.25x, where 0 < x ≤ 0.41. The lattice parameters of a increased and c decreased with increasing SrO content in the solid solution range. The single crystals had a cleavage plane parallel to the (001) plane and growth direction. The electrical conductivity parallel and perpendicular to the cleavage plane showed maximum at x = 0.2 (i.e., 13.8 mol% SrO). The activation energy of electrical conductivity parallel to the cleavage plane (140 to 165 kJ/mol) was almost the same as that perpendicular to the cleavage plane (150 to 170 kJ/mol).

AB - Non-stoichiometric Sr β-alumina single crystals were prepared in SrO-MgO-Al2O3 system by a floating zone (FZ) method. The range of non-stoichiometry was determined as Sr1-0.25xMg1-xAl10+xO17+0.25x, where 0 < x ≤ 0.41. The lattice parameters of a increased and c decreased with increasing SrO content in the solid solution range. The single crystals had a cleavage plane parallel to the (001) plane and growth direction. The electrical conductivity parallel and perpendicular to the cleavage plane showed maximum at x = 0.2 (i.e., 13.8 mol% SrO). The activation energy of electrical conductivity parallel to the cleavage plane (140 to 165 kJ/mol) was almost the same as that perpendicular to the cleavage plane (150 to 170 kJ/mol).

KW - Cell parameters

KW - Electrical conductivity

KW - Floating zone method

KW - Single crystal

KW - Single-phase region

KW - Sr β-alumina

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UR - http://www.scopus.com/inward/citedby.url?scp=0037213076&partnerID=8YFLogxK

U2 - 10.1016/S0167-2738(02)00678-1

DO - 10.1016/S0167-2738(02)00678-1

M3 - Article

AN - SCOPUS:0037213076

SN - 0167-2738

VL - 156

SP - 425

EP - 431

JO - Solid State Ionics

JF - Solid State Ionics

IS - 3-4

ER -

Electrical conductivity of non-stoichiometric Sr β-alumina single crystals prepared by a floating zone method

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