The effects of charge carriers on magnetic properties of ferromagnetic semiconductors

被引：0

作者：

Tehranchi, MM ^{[1
]}

Ghanaatshoar, M ^{[1
]}

Ebrahimi, F ^{[1
]}

机构：

[1] Shahid Beheshti Univ, Laser Res Inst, Tehran 19839, Iran

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2001年 / 92卷

关键词：

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Coherent potential approximation (CPA) is used to study the effects of charge carriers on the magnetic properties of ferromagnetic semiconductors. Using a generalized mean-field theory and the Vonsovskii model for the interaction of conduction electrons with localized spins, we have calculated the density of states (DOS). We also derived a typical curve for the critical temperature and some magnetization curves for the EuO system. There is good agreement with the experimental results.

引用

页码：S249 / S253

页数：5

共 24 条

[1]

BABCENCO A, 1981, J PHYS C SOLID STATE, V31, P5347

[2] SELF-CONSISTENT CPA TREATMENT OF THE CONDUCTION ELECTRON-SPIN POLARIZATION OF DEGENERATE FERROMAGNETIC SEMICONDUCTORS [J].

BORGIEL, W ;

NOLTING, W ;

BORSTEL, G .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1986, 136 (01) :131-144

[3] ELECTRICAL-RESISTIVITY FOR THE S-F MODEL WITHIN THE ALLOY ANALOGY APPROXIMATION (CPA) [J].

BORGIEL, W ;

NOLTING, W ;

BORSTEL, G .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1987, 67 (03) :349-355

[4] EFFECT OF ELECTRON CONCENTRATION ON MAGNETIC EXCHANGE INTERACTIONS IN RARE EARTH CHALCOGENIDES [J].

HOLTZBERG, F ;

METHFESSEI, S ;

SUITS, JC ;

MCGUIRE, TR .

PHYSICAL REVIEW LETTERS, 1964, 13 (01) :18-+

[5] ELECTRONIC STATES IN MAGNETIC SEMICONDUCTORS - EXTENSION OF CPA TO RANDOM SPIN SYSTEMS [J].

KUBO, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1974, 36 (01) :32-38

[6] THE MAGNETIC, OPTICAL, AND TRANSPORT-PROPERTIES OF REPRESENTATIVES OF A CLASS OF MAGNETIC SEMICONDUCTORS - THE EUROPIUM CHALCOGENIDES [J].

MAUGER, A ;

GODART, C .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1986, 141 (2-3) :51-176

[7] DILUTED MAGNETIC III-V SEMICONDUCTORS [J].

MUNEKATA, H ;

OHNO, H ;

VONMOLNAR, S ;

SEGMULLER, A ;

CHANG, LL ;

ESAKI, L .

PHYSICAL REVIEW LETTERS, 1989, 63 (17) :1849-1852

[8]

Nagaev EL, 1996, USP FIZ NAUK+, V166, P833, DOI 10.1070/PU1996v039n08ABEH000161

[9] Disappearance of the resistivity peak and possibility of the conductivity peak in overdoped ferromagnets [J].

Nagaev, EL .

PHYSICS LETTERS A, 1997, 229 (02) :121-125

[10]

NAGAEV EL, 1983, PHYSICS MAGNETIC SEM

← 1 2 3 →