A NEUTRON-DIFFRACTION STUDY OF 2 STRONTIUM COBALT IRON-OXIDES

被引：51

作者：

HARRISON, WTA ^{[1
]}

LEE, TH ^{[1
]}

YANG, YL ^{[1
]}

SCARFE, DP ^{[1
]}

LIU, LM ^{[1
]}

JACOBSON, AJ ^{[1
]}

机构：

[1] UNIV HOUSTON,TEXAS CTR SUPERCONDUCT,HOUSTON,TX 77204

来源：

MATERIALS RESEARCH BULLETIN | 1995年 / 30卷 / 05期

关键词：

STRONTIUM; COBALT; IRON; OXIDE;

D O I：

10.1016/0025-5408(95)00041-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structures of the perovskite and brownmillerite phases of the nonstoichiometric oxide SrCo0.8Fe0.2O3-delta have been refined by Rietveld analysis of powder neutron diffraction data. SrCo0.8Fe0.2O2.78: M(r) = 190.575, cubic, space group <Pm(3)over bar m> (No. 221), a = 3.8491(2)Angstrom, V = 57.025(5)Angstrom(3), Z = 1, R(p) = 8.37%, R(wp) = 11.52%. Sr2Co1.6Fe0.4O5: M(r) = 371.87, orthorhombic, space group Icmm (No. 74), a = 5.5981(3)Angstrom, b = 15.7832(8)Angstrom, c = 5.4692(3)Angstrom, V = 483.23(7)Angstrom(3), Z = 4, R(p) = 6.23%, R(wp) = 7.52%.

引用

页码：621 / 630

页数：10

共 24 条

[1] STRUCTURAL SIMILARITIES AMONG OXYGEN-DEFICIENT PEROVSKITES [J].

ANDERSON, MT ;

VAUGHEY, JT ;

POEPPELMEIER, KR .

CHEMISTRY OF MATERIALS, 1993, 5 (02) :151-165

[2] MAGNETIC EXCHANGE INTERACTIONS IN PEROVSKITE SOLID-SOLUTIONS .7. A STUDY OF THE NONSTOICHIOMETRIC PHASE SRCOO3-YBY FE-57 MOSSBAUER-SPECTROSCOPY [J].

BATTLE, PD ;

GIBB, TC .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1987, (03) :667-671

[3] THE CRYSTAL AND MAGNETIC-STRUCTURES OF SR2COFEO5 [J].

BATTLE, PD ;

GIBB, TC ;

LIGHTFOOT, P .

JOURNAL OF SOLID STATE CHEMISTRY, 1988, 76 (02) :334-339

[4] THE FORMATION OF NONEQUILIBRIUM MICRODOMAINS DURING THE OXIDIATION OF SR2COFEO5 [J].

BATTLE, PD ;

GIBB, TC ;

NIXON, S .

JOURNAL OF SOLID STATE CHEMISTRY, 1988, 73 (02) :330-337

[5] MOSSBAUER CHARACTERISTICS OF THE SR2COFEO6 PEROVSKITE OBTAINED BY ELECTROCHEMICAL OXIDATION [J].

BEZDICKA, P ;

FOURNES, L ;

WATTIAUX, A ;

GRENIER, JC ;

POUCHARD, M .

SOLID STATE COMMUNICATIONS, 1994, 91 (07) :501-505

[6] CRYSTAL STRUCTURE OF CA2FEO5 AND ITS RELATION TO NUCLEAR ELECTRIC FIELD GRADIENT AT IRON SITES [J].

COLVILLE, AA .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL CRYSTALLOGRAPHY AND CRYSTAL CHEMISTRY, 1970, B 26 (OCT15) :1469-&

[7] CRYSTAL STRUCTURE OF BROWNMILLERITE, CA2FEALO5 [J].

COLVILLE, AA ;

GELLER, S .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL CRYSTALLOGRAPHY AND CRYSTAL CHEMISTRY, 1971, B 27 (DEC15) :2311-&

[8]

GIBB TC, 1987, J CHEM SOC DA, P667

[9] POWDER NEUTRON-DIFFRACTION INVESTIGATION OF NUCLEAR AND MAGNETIC-STRUCTURE OF SR2FE2O5 [J].

GREAVES, C ;

JACOBSON, AJ ;

TOFIELD, BC ;

FENDER, BEF .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1975, 31 (MAR15) :641-646

[10] STRONTIUM COBALTITE, SR2O2O5 - CHARACTERIZATION AND MAGNETIC-PROPERTIES [J].

GRENIER, JC ;

GHODBANE, S ;

DEMAZEAU, G ;

POUCHARD, M ;

HAGENMULLER, P .

MATERIALS RESEARCH BULLETIN, 1979, 14 (06) :831-839

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