THE INFLUENCE OF THE T-ATOM IN CO2TZ ON THE HYPERFINE FIELDS (T = TI, V, CR, MN, FE - Z = GA, AL)

被引：68

作者：

ISHIDA, S ^{[1
]}

SUGIMURA, S ^{[1
]}

FUJII, S ^{[1
]}

ASANO, S ^{[1
]}

机构：

[1] UNIV TOKYO,COLL ARTS & SCI,INST PHYS,MEGURO KU,TOKYO 153,JAPAN

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1991年 / 3卷 / 31期

关键词：

D O I：

10.1088/0953-8984/3/31/003

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Hyperfine fields have been calculated by the LMTO-ASA method within the framework of the LSD approximation. The hyperfine field at the Co position in Co2TZ changes drastically with the T atom from a positive value for the case T = Ti to a negative value for the case T = Fe. The change occurs mainly in the contribution to the hyperfine field from valence s electrons (H(val)), which is sensitive to the neighbouring magnetic moments. The value of H(val) is roughly proportional to the 'spin polarization' of the valence s electrons at Co atom positions, which is closely related to the density of states of valence s electrons.

引用

页码：5793 / 5803

页数：11

共 18 条

[1]

Andersen O. K., 1985, Proceedings of the International School of Physics `Enrico Fermi'

[2]

Course LXXXIX. Highlights of Condensed-Matter Theory, P59

[3] MAGNETIC AND MAGNETO-OPTICAL PROPERTIES OF HEUSLER ALLOYS BASED ON ALUMINUM AND GALLIUM [J].

BUSCHOW, KHJ ;

VANENGEN, PG .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1981, 25 (01) :90-96

[4] HYPERFINE FIELDS AND ELECTRONIC-STRUCTURES OF THE HEUSLER ALLOYS CO2MNAL, CO2MNGA, CO2MNSI, CO2MNGE, CO2MNSN [J].

FUJII, S ;

SUGIMURA, S ;

ISHIDA, S ;

ASANO, S .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (43) :8583-8589

[5] BAND THEORY OF CO2MNSN, CO2TISN AND CO2TIAL [J].

ISHIDA, S ;

AKAZAWA, S ;

KUBO, Y ;

ISHIDA, J .

JOURNAL OF PHYSICS F-METAL PHYSICS, 1982, 12 (06) :1111-1122

[6] BANDSTRUCTURES AND HYPERFINE FIELDS OF HEUSLER ALLOYS [J].

ISHIDA, S ;

ASANO, S ;

ISHIDA, J .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1984, 53 (08) :2718-2725

[7] ORBITAL ANGULAR-MOMENTUM IN CO2MNSN [J].

ISHIDA, S ;

OTSUKA, Y ;

KUBO, Y ;

ISHIDA, J .

JOURNAL OF PHYSICS F-METAL PHYSICS, 1983, 13 (06) :1173-1178

[8]

JANAK JF, 1975, PHYS REV B, V12, P1757

[9] TEMPERATURE AND PRESSURE-DEPENDENCE OF NMR FREQUENCIES IN FERROMAGNETIC HEUSLER ALLOYS CONTAINING COBALT AND MANGANESE [J].

KAWAKAMI, M ;

KASAMATSU, Y ;

IDO, H .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1987, 70 (1-3) :265-267

[10] NMR-STUDY OF SOME HEUSLER ALLOYS CONTAINING CO AND MN [J].

KAWAKAMI, M .

HYPERFINE INTERACTIONS, 1989, 51 (1-4) :993-1001

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