DIMENSIONAL CROSSOVER IN ULTRATHIN NI(111) FILMS ON W(110)

被引：281

作者：

LI, Y

BABERSCHKE, K

机构：

[1] Institut F̈r Experimentalphysik, Freie Universität Berlin, D-1000 Berlin 33

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.68.1208

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In situ magnetic resonance measurements of ultrathin Ni(111) on W(110) prepared in ultrahigh vacuum have been carried out to determine the thickness dependence of the critical exponent-beta and the Curie temperature T(C). We find that beta changes drastically from 0.30 to 0.13 between 7 and 5 monolayers. We attribute this behavior to a crossover from a three- to a two-dimensional magnetic behavior. The observed T(C)'s and linewidths also exhibit the effect of the dimensional crossover. Ni films less-than-or-equal-to 4 layers thick show a truly two-dimensional magnetic phase transition with beta = 0.13.

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页码：1208 / 1211

页数：4

相关论文

共 33 条

[1] CRITICAL TEMPERATURES OF ISING LATTICE FILMS [J].

ALLAN, GAT .

PHYSICAL REVIEW B, 1970, 1 (01) :352-&

[2]

[Anonymous], 2001, MODERN THEORY CRITIC

[3]

[Anonymous], 1983, PHASE TRANSITIONS CR

[4] MAGNETIC PHASE-TRANSITION IN A 2-DIMENSIONAL SYSTEM - P(1X1)-NI ON CU(111) [J].

BALLENTINE, CA ;

FINK, RL ;

ARAYAPOCHET, J ;

ERSKINE, JL .

PHYSICAL REVIEW B, 1990, 41 (04) :2631-2634

[5] STRUCTURE AND MAGNETISM OF OLIGATOMIC NI(111)-FILMS ON RE(0001) [J].

BERGHOLZ, R ;

GRADMANN, U .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1984, 45 (2-3) :389-398

[6] FERROMAGNETIC RESONANCE IN NICKEL AT HIGH TEMPERATURES [J].

BHAGAT, SM ;

CHICKLIS, EP .

PHYSICAL REVIEW, 1969, 178 (02) :828-&

[7] ABSOLUTE VALUE OF THE MAGNETIC-MOMENT PER ATOM IN AG/FE/AG(001) AND AG/CO/AG(001) EPITAXIAL SANDWICH STRUCTURES [J].

BLAND, JAC ;

JOHNSON, AD ;

NORRIS, C ;

LAUTER, HJ .

JOURNAL OF APPLIED PHYSICS, 1990, 67 (09) :5397-5399

[8] EXPERIMENTS ON SIMPLE MAGNETIC MODEL SYSTEMS [J].

DEJONGH, LJ ;

MIEDEMA, AR .

ADVANCES IN PHYSICS, 1974, 23 (01) :1-260

[9] CRITICAL-TEMPERATURE OF FINITE SYSTEMS IN D DIMENSIONS [J].

DOMB, C .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1973, 6 (09) :1296-1305

[10] MAGNETIC PHASE-TRANSITION IN TWO-DIMENSIONAL ULTRATHIN FE FILMS ON AU(100) [J].

DURR, W ;

TABORELLI, M ;

PAUL, O ;

GERMAR, R ;

GUDAT, W ;

PESCIA, D ;

LANDOLT, M .

PHYSICAL REVIEW LETTERS, 1989, 62 (02) :206-209

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