ELUSIVE SUPERCONDUCTIVITY IN POLYCRYSTALLINE SAMPLES OF LAYERED LANTHANUM NICKELATES

被引：21

作者：

GANGULI, AK ^{[1
]}

NAGARAJAN, R ^{[1
]}

RAO, GR ^{[1
]}

VASANTHACHARYA, NY ^{[1
]}

RAO, CNR ^{[1
]}

机构：

[1] INDIAN INST SCI,SOLID STATE & STRUCT CHEM UNIT,BANGALORE 560012,KARNATAKA,INDIA

来源：

SOLID STATE COMMUNICATIONS | 1989年 / 72卷 / 02期

关键词：

Lanthanum Compounds--Spectroscopic Analysis - Nickel Compounds--Spectroscopic Analysis - Oxides--Spectroscopic Analysis - Strontium Compounds--Spectroscopic Analysis - X-ray Analysis--Applications;

D O I：

10.1016/0038-1098(89)90522-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

La2-xNiO4, La2-xSrxNiO4 and related nickelates have been investigated for possible presence of superconductivity. While there is clear onset of diamagnetism around 20 K in many of these nickelates, we do not, however, find any anomaly in the electrical resistivity, magnetoresistance or thermopower around 20 K. High energy spectroscopic studies show Ni to be in the 2+ oxidation state accompanied by a substantial proportion of oxygen holes.

引用

页码：195 / 197

页数：3

共 13 条

[1] MAGNETIC CORRELATIONS IN LA2NIO4+DELTA [J].

AEPPLI, G ;

BUTTREY, DJ .

PHYSICAL REVIEW LETTERS, 1988, 61 (02) :203-206

[2] MAGNETIC-PROPERTIES OF QUASI-2-DIMENSIONAL LA2NIO4 [J].

BUTTREY, DJ ;

HONIG, JM ;

RAO, CNR .

JOURNAL OF SOLID STATE CHEMISTRY, 1986, 64 (03) :287-295

[3]

CARVAJAL JR, 1988, PHYS REV B, V38, P7148

[4] CRYSTAL-CHEMISTRY AND MAGNETIC-PROPERTIES OF LAYERED METAL-OXIDES POSSESSING THE K2NIF4 OR RELATED STRUCTURES [J].

GANGULY, P ;

RAO, CNR .

JOURNAL OF SOLID STATE CHEMISTRY, 1984, 53 (02) :193-216

[5] EVIDENCE FOR SUPERCONDUCTIVITY IN LA2CUO4 [J].

GRANT, PM ;

PARKIN, SSP ;

LEE, VY ;

ENGLER, EM ;

RAMIREZ, ML ;

VAZQUEZ, JE ;

LIM, G ;

JACOWITZ, RD ;

GREENE, RL .

PHYSICAL REVIEW LETTERS, 1987, 58 (23) :2482-2485

[6]

JORGENSEN JD, 1988, PHYS REV B, V38, P11137

[7]

KAKOL Z, IN PRESS J SOLID STA

[8] PREPARATION AND CHARACTERIZATION OF LA2CO0-H+DELTA [J].

RAM, RAM ;

GANGULY, P ;

RAO, CNR ;

HONIG, JM .

MATERIALS RESEARCH BULLETIN, 1988, 23 (04) :501-506

[9] STRUCTURAL ASPECTS OF HIGH-TEMPERATURE CUPRATE SUPERCONDUCTORS [J].

RAO, CNR ;

RAVEAU, B .

ACCOUNTS OF CHEMICAL RESEARCH, 1989, 22 (03) :106-113

[10] SOLID-STATE CHEMISTRY OF HIGH-TEMPERATURE OXIDE SUPERCONDUCTORS - THE EXPERIMENTAL SITUATION [J].

RAO, CNR .

JOURNAL OF SOLID STATE CHEMISTRY, 1988, 74 (01) :147-162

← 1 2 →