Magnetic anisotropy and order parameter in nanostructured CoPt particles

被引：11

作者：

Komogortsev, S. V. ^{[1
]}

Iskhakov, R. S. ^{[1
]}

Zimin, A. A. ^{[1
]}

Filatov, E. Yu. ^{[2
,3
]}

Korenev, S. V. ^{[2
,3
]}

Shubin, Yu. V. ^{[2
,3
]}

Chizhik, N. A. ^{[4
]}

Yurkin, G. Yu. ^{[1
]}

Eremin, E. V. ^{[1
]}

机构：

[1] SB RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

[2] SB RAS, Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia

[3] Novosibirsk State Univ, Novosibirsk 630090, Russia

[4] Siberian Fed Univ, Krasnoyarsk 660041, Russia

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 15期

关键词：

FEPT THIN-FILMS; REMANENT MAGNETIZATION; UNIAXIAL ANISOTROPIES; FINE PARTICLES; NANOPARTICLES; FERROMAGNETS; PHASE;

D O I：

10.1063/1.4824973

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The correlation of magnetic anisotropy energy with order parameter in the crystallites of CoPt nanostructured particles prepared by thermal decomposition and further annealing has been studied by investigation of the approach magnetization to saturation curves and x-ray powder diffraction pattern profiles. It is shown that magnetic anisotropy energy value in partially ordered CoPt crystallite could be described as an intermediate case between two extremes, corresponding to either single or several c-domains of L1(0) phase in crystallite. (C) 2013 AIP Publishing LLC.

引用

页数：4

共 36 条

[1] Structural, magnetic, and defect properties of Co-Pt-type magnetic-storage alloys: Density-functional theory study of thermal processing effects [J].

Alam, Aftab ;

Kraczek, Brent ;

Johnson, D. D. .

PHYSICAL REVIEW B, 2010, 82 (02)

[2] CHOICE OF COLLIMATORS FOR A CRYSTAL SPECTROMETER FOR NEUTRON DIFFRACTION [J].

CAGLIOTI, G ;

PAOLETTI, A ;

RICCI, FP .

NUCLEAR INSTRUMENTS & METHODS, 1958, 3 (04) :223-228

[3] ORDERING IN FERROMAGNETS WITH RANDOM ANISOTROPY [J].

CHUDNOVSKY, EM ;

SASLOW, WM ;

SEROTA, RA .

PHYSICAL REVIEW B, 1986, 33 (01) :251-261

[4]

Coey J M. D., 2010, Magnetism and Magnetic Materials, P464, DOI DOI 10.1017/CBO9780511845000

[5] CoPt magnetic nanocrystals in the A1/L10 transformation [J].

Demortiere, Arnaud ;

Petit, Christophe .

JOURNAL OF APPLIED PHYSICS, 2011, 109 (08)

[6] Magnetic properties of nanoparticles of cobalt ferrite at high magnetic field [J].

Franco, A., Jr. ;

Machado, F. L. A. ;

Zapf, V. S. .

JOURNAL OF APPLIED PHYSICS, 2011, 110 (05)

[7] Observation of long-period superstructures in chemically synthesised CoPt nanoparticles [J].

Frommen, C ;

Rösner, H .

MATERIALS LETTERS, 2004, 58 (1-2) :123-127

[8] Negative remanent magnetization of fine particles with competing cubic and uniaxial anisotropies [J].

Geshev, J ;

Viegas, ADC ;

Schmidt, JE .

JOURNAL OF APPLIED PHYSICS, 1998, 84 (03) :1488-1492

[9] Remanent magnetization plots of fine particles with competing cubic and uniaxial anisotropies [J].

Geshev, J ;

Mikhov, M ;

Schmidt, JE .

JOURNAL OF APPLIED PHYSICS, 1999, 85 (10) :7321-7327

[10]

Hellwig O., 2013, U.S. patent, Patent No. [8,399,051, 8399051]

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