Phase stability-analysis in Fe-Pt and Co-Pt alloy systems: an augmented space study

被引：13

作者：

Paudyal, D ^{[1
]}

Saha-Dasgupta, T ^{[1
]}

Mookerjee, A ^{[1
]}

机构：

[1] SN Bose Natl Ctr Basic Sci, Kolkata 700098, W Bengal, India

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2004年 / 16卷 / 41期

关键词：

D O I：

10.1088/0953-8984/16/41/007

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have studied the problem of phase stability in Fe-Pt and Co-Pt alloy systems. We have used the orbital peeling technique in the conjunction of augmented space recursion based on the tight binding linear orbital method as the method for the calculation of pair interaction energies. In particular, we have generalized our earlier technique to take account of magnetic effects for the cases where the magnetic transition is higher than the order-disorder chemical transition temperature as in the case of Co3Pt. Our theoretical results obtained within this framework successfully reproduce the experimentally observed trends.

引用

页码：7247 / 7260

页数：14

共 26 条

[1]

Andersen O.K., LECT METHODS ELECT S

[2] EXPLICIT, 1ST-PRINCIPLES TIGHT-BINDING THEORY [J].

ANDERSEN, OK ;

JEPSEN, O .

PHYSICAL REVIEW LETTERS, 1984, 53 (27) :2571-2574

[3]

ANDERSEN OK, 1992, SPRINGER LECT NOTES, V283, P1

[4] TIGHT-BINDING THEORY OF INTERACTIONS BETWEEN TRANSITION-METAL ADATOMS ADSORBED ON A TRANSITION-METAL SUBSTRATE [J].

BURKE, NR .

SURFACE SCIENCE, 1976, 58 (02) :349-373

[5] Study of the chemical dependence of the effective pair potentials of Co-Pt alloy [J].

Capitan, MJ ;

Lefebvre, S ;

Calvayrac, Y ;

Bessiere, M ;

Cenedese, P .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1999, 32 :1039-1049

[6] DENSITY-FUNCTIONAL THEORY APPLIED TO PHASE-TRANSFORMATIONS IN TRANSITION-METAL ALLOYS [J].

CONNOLLY, JWD ;

WILLIAMS, AR .

PHYSICAL REVIEW B, 1983, 27 (08) :5169-5172

[7]

DAS GP, 2003, ADV CONDENSED MATTER, V4

[8] AUGMENTED-SPACE RECURSIVE TECHNIQUE FOR THE ANALYSIS OF ALLOY PHASE-STABILITY IN RANDOM BINARY-ALLOYS [J].

DASGUPTA, I ;

SAHA, T ;

MOOKERJEE, A .

PHYSICAL REVIEW B, 1995, 51 (06) :3413-3421

[9]

Ducastelle F., 1991, Order and Phase Stability in Alloys

[10] THICKNESS-DEPENDENT OSCILLATION OF THE MAGNETOOPTICAL PROPERTIES OF AU-SANDWICHED (001)FE FILMS [J].

GEERTS, W ;

SUZUKI, Y ;

KATAYAMA, T ;

TANAKA, K ;

ANDO, K ;

YOSHIDA, S .

PHYSICAL REVIEW B, 1994, 50 (17) :12581-12586

← 1 2 3 →