Structure and magnetism of near-stoichiometric FePd nanoparticles

被引：11

作者：

Gruner, Markus E. ^{[1
]}

Dannenberg, Antje

机构：

[1] Univ Duisburg Essen, CENIDE, Dept Phys, D-47048 Duisburg, Germany

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2009年 / 321卷 / 07期

关键词：

Density functional theory; Binary transition metal nanoparticle; Multiple twinning; Iron-palladium alloy; ANISOTROPY;

D O I：

10.1016/j.jmmm.2008.11.062

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate from first principles the energetic order of single crystalline L10- ordered and multiply twinned morphologies of FePd nanoparticles close to the stoichiometric composition considering up to 561 atoms. The results are related to previous analogous calculations of FePt and CoPt nanoparticles. We find that compared to the isoelectronic FePt alloy, multiply twinned structures are slightly favored in energy, while the latent tendencies to form a layered antiferromagnetic structure in the L1(0) phase are less pronounced. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：861 / 864

页数：4

共 28 条

[1] Enhanced orbital magnetism in Fe50Pt50 nanoparticles [J].

Antoniak, C. ;

Lindner, J. ;

Spasova, M. ;

Sudfeld, D. ;

Acet, M. ;

Farle, M. ;

Fauth, K. ;

Wiedwald, U. ;

Boyen, H. -G. ;

Ziemann, P. ;

Wilhelm, F. ;

Rogalev, A. ;

Sun, Shouheng .

PHYSICAL REVIEW LETTERS, 2006, 97 (11)

[2] Competition between ferromagnetism and antiferromagnetism in FePt [J].

Brown, G ;

Kraczek, B ;

Janotti, A ;

Schulthess, TC ;

Stocks, GM ;

Johnson, DD .

PHYSICAL REVIEW B, 2003, 68 (05)

[3] Phase transformation and magnetic anisotropy of an iron-palladium ferromagnetic shape-memory alloy [J].

Cui, J ;

Shield, TW ;

James, RD .

ACTA MATERIALIA, 2004, 52 (01) :35-47

[4] Ion beam induced destabilization of icosahedral structures in gas phase prepared FePt nanoparticles -: art. no. 10N112 [J].

Dmitrieva, O ;

Rellinghaus, B ;

Kästner, J ;

Liedke, MO ;

Fassbender, J .

JOURNAL OF APPLIED PHYSICS, 2005, 97 (10)

[5] Perpendicular magnetic anisotropy of binary alloys:: A total-energy calculation [J].

Galanakis, I ;

Alouani, M ;

Dreyssé, H .

PHYSICAL REVIEW B, 2000, 62 (10) :6475-6484

[6] Antiferromagnetism and segregation in cuboctahedral FePt nanoparticles [J].

Gruner, M. E. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2008, 41 (13)

[7] Multiply twinned morphologies of FePt and CoPt nanoparticles [J].

Gruner, Markus E. ;

Rollmann, Georg ;

Entel, Peter ;

Farle, Michael .

PHYSICAL REVIEW LETTERS, 2008, 100 (08)

[8] Magnetics of ultrathin FePt nanoparticle films [J].

Held, GA ;

Zeng, H ;

Sun, SH .

JOURNAL OF APPLIED PHYSICS, 2004, 95 (03) :1481-1484

[9] INHOMOGENEOUS ELECTRON-GAS [J].

RAJAGOPAL, AK ;

CALLAWAY, J .

PHYSICAL REVIEW B, 1973, 7 (05) :1912-1919

[10] Magnetostriction of martensite [J].

James, RD ;

Wuttig, M .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1998, 77 (05) :1273-1299

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