Preparation and electrical properties of KCa2-xLaxNb3O10

被引：14

作者：

Hamada, D

Machida, M

Sugahara, Y

Kuroda, K

机构：

[1] WASEDA UNIV,SCH SCI & ENGN,DEPT APPL CHEM,SHINJUKU KU,TOKYO 169,JAPAN

[2] WASEDA UNIV,KAGAMI MEM LAB MAT SCI & TECHNOL,SHINJUKU KU,TOKYO 169,JAPAN

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1996年 / 6卷 / 01期

关键词：

D O I：

10.1039/jm9960600069

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electron-doped layered perovskite KCa2-xLaxNb3O10 was prepared from KNbO3, Nb2O5, Nb, La2O3 and KCa2Nb3O10 at 1200 degrees C for 10 h under Ar. Essentially single-phase KCa2-xLaxNb3O10 with plate-like morphology was obtained with 0 less than or equal to x less than or equal to 0.3, and lattice parameters increased with increasing x. All the La-doped products showed semiconducting behaviour. Linear (log rho)-T relationships were clearly observed, but the resistivity behaviour deviates from the linear relationship at lower temperatures. A possible conduction mechanism is discussed.

引用

收藏

页码：69 / 72

页数：4

相关论文

共 52 条

[1] A NEW NON-CU-OXIDE SUPERCONDUCTOR - (SR1-XLNX)NB2O6-Y(LN-LA, ND, PR AND CE) [J].

AKIMITSU, J ;

AMANO, J ;

SAWA, H ;

NAGASE, O ;

GYODA, K ;

KOGAI, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1991, 30 (7A) :L1155-L1156

[2] SYNTHESIS AND STRUCTURE OF A NEW LAYERED NIOBIUM BLUE BRONZE - RB2LANB2O7 [J].

ARMSTRONG, AR ;

ANDERSON, PA .

INORGANIC CHEMISTRY, 1994, 33 (19) :4366-4369

[3] POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM [J].

BEDNORZ, JG ;

MULLER, KA .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 64 (02) :189-193

[4] STRUCTURAL AND ELECTRONIC ORIGIN OF THE 3-DIMENSIONAL ELECTRICAL-PROPERTIES OF P8W12O52 AND ITS INSERTED AND SUBSTITUTED ANALOGS LIXP8W12O52, NAXP8W12O52 AND P8W12-XMOXO52 [J].

CANADELL, E ;

RACHIDI, IE ;

WANG, E ;

GREENBLATT, M ;

WHANGBO, MH .

INORGANIC CHEMISTRY, 1989, 28 (12) :2455-2459

[5] PREPARATION, NEUTRON STRUCTURAL STUDY AND CHARACTERIZATION OF BANBO3 - A PAULI-LIKE METALLIC PEROVSKITE [J].

CASAIS, MT ;

ALONSO, JA ;

RASINES, I ;

HIDALGO, MA .

MATERIALS RESEARCH BULLETIN, 1995, 30 (02) :201-208

[6] LOCALIZED-TO-ITINERANT ELECTRON TRANSITION IN SR2IR1-XRUXO4 [J].

CAVA, RJ ;

BATLOGG, B ;

KIYONO, K ;

TAKAGI, H ;

KRAJEWSKI, JJ ;

PECK, WF ;

RUPP, LW ;

CHEN, CH .

PHYSICAL REVIEW B, 1994, 49 (17) :11890-11896

[7] ANTIFERROMAGNETISM AND METALLIC CONDUCTIVITY IN NB12O29 [J].

CAVA, RJ ;

BATLOGG, B ;

KRAJEWSKI, JJ ;

GAMMEL, P ;

POULSEN, HF ;

PECK, WF ;

RUPP, LW .

NATURE, 1991, 350 (6319) :598-600

[8] ELECTRICAL AND MAGNETIC-PROPERTIES OF NB2O5-DELTA CRYSTALLOGRAPHIC SHEAR STRUCTURES [J].

CAVA, RJ ;

BATLOGG, B ;

KRAJEWSKI, JJ ;

POULSEN, HF ;

GAMMEL, P ;

PECK, WF ;

RUPP, LW .

PHYSICAL REVIEW B, 1991, 44 (13) :6973-6981

[9] SEARCH FOR SUPERCONDUCTIVITY IN ANALOGS OF LA2-XSRXCUO4 - SR2-XLNXVO4 (LN=LA, CE, PR, ND, EU) [J].

DESLANDES, F ;

NAZZAL, AI ;

TORRANCE, JB .

PHYSICA C, 1991, 179 (1-3) :85-90

[10]

DION M, 1986, REV CHIM MINER, V23, P61

← 1 2 3 4 5 6 →