Changes in electronic properties of high quality kish graphite crystals by doping with a slight amount of iron impurities

被引：4

作者：

Kaburagi, Y ^{[1
]}

Hishiyama, Y ^{[1
]}

机构：

[1] Musashi Inst Technol, Fac Engn, Setagaya Ku, Tokyo 158, Japan

来源：

CARBON | 1999年 / 37卷 / 01期

关键词：

kish graphite; defects; galvanomagnetic properties;

D O I：

10.1016/S0008-6223(98)90104-X

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：

High-quality kish graphites (KGs) were doped with small amounts of Fe at high temperatures to examine the influence of Fe impurities on their electronic properties. The Fe impurities create excess hole carriers in the KG specimens. The values of residual resistivity ratio (RRR) measured for KG 46.7-Fe and 24.2-Fe were 13.6 and 11.5, respectively. The values of the RRR and Δ/ρo decreased with increasing temperature, lowering the degree of crystal perfection. This is due to the doped Fe impurities which acted as a strong scattering center of carriers.

引用

页码：155 / 158

页数：4

共 16 条

[1]

Brandt N. B., 1975, SOV PHYS JETP, V40, P564

[2] GALVANOMAGNETIC EFFECTS IN GRAPHITE .1. LOW FIELD DATA AND DENSITIES OF FREE CARRIERS [J].

DILLON, RO ;

SPAIN, IL ;

WOOLLAM, JA ;

LOWREY, WH .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1978, 39 (09) :907-922

[3] LOW-TEMPERATURE ANOMALIES IN THERMOELECTRICITY OF HIGHLY ORIENTED GRAPHITE IN RELATION TO SAMPLE QUALITY [J].

HISHIYAMA, Y ;

ONO, A .

CARBON, 1985, 23 (04) :445-448

[4]

HISHIYAMA Y, 1992, CARBON, V30, P443

[5] LINEAR-DEPENDENCE OF TRANSVERSE MAGNETORESISTANCE ON MAGNETIC-FIELD IN KISH GRAPHITE [J].

KABURAGI, Y ;

HISHIYAMA, Y .

CARBON, 1995, 33 (10) :1505-1506

[6] ANOMALOUS HALL-COEFFICIENT IN KISH GRAPHITE [J].

KABURAGI, Y ;

HISHIYAMA, Y .

CARBON, 1995, 33 (09) :1349-1350

[7] MAGNETORESISTANCE OF HIGHLY ORIENTED GRAPHITE AT 77K AND 4.2K [J].

KABURAGI, Y .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1982, 15 (26) :5425-5440

[8] A scaling approach to the transverse magnetoresistance of kish graphite at 77 K [J].

Kaburagi, Y ;

Hishiyama, Y .

CARBON, 1997, 35 (08) :1151-1156

[9]

KABURAGI Y, IN PRESS CARBON

[10] THERMOELECTRIC AND THERMOMAGNETIC EFFECTS IN SLIGHTLY RADIATION-DAMAGED GRAPHITE [J].

KAWAMURA, K ;

OSHIMA, H ;

TSUZUKU, T .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1977, 42 (05) :1669-1674

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