Magnetic properties of Fe-Co catalysts used for carbon nanofiber synthesis

被引：8

作者：

Sorge, K. D. ^{[1
]}

Klein, K. L. ^{[2
,3
]}

Melechko, A. V. ^{[4
]}

Finkel, C. L. ^{[1
]}

Malkina, O. ^{[1
]}

Leventouri, Th. ^{[1
]}

Fowlkes, J. D. ^{[2
,3
]}

Rack, P. D. ^{[2
,3
]}

Simpson, M. L. ^{[2
,3
]}

机构：

[1] Florida Atlantic Univ, Dept Phys, Boca Raton, FL 33431 USA

[2] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

[3] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[4] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 104卷 / 03期

关键词：

D O I：

10.1063/1.2960572

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetic properties of Fe-Co alloys used as catalysts for vertically aligned carbon nanofiber growth are presented at several stages in the formation process: from thin films to dewetted islands to carbon-encapsulated particles. Electron microscopy shows their morphological properties as a function of the alloy ratio. The magnetic properties are investigated by superconducting quantum interference device magnetometry in a field range of vertical bar H vertical bar <= 20 kOe and temperatures between 2 and 330 K. Magnetization measurements illustrate a composition dependence of the magnetic properties. In addition, there is a significant amount of metal that is not incorporated in the resultant catalyst particles. This metal is superparamagnetic (SPM) and features of the magnetization curve shed light on the magnetic moment distribution of these SPM clusters. (c) 2008 American Institute of Physics.

引用

页数：7

共 50 条

[21] Air stable Fe and Fe-Co magnetic fluids -: synthesis and characterization
Bönnemann, H
Brand, RA
Brijoux, W
Hofstadt, HW
Frerichs, M
Kempter, V
Maus-Friedrichs, W
Matoussevitch, N
Nagabhushana, KS
Voigts, F
Caps, V
APPLIED ORGANOMETALLIC CHEMISTRY, 2005, 19 (06) : 790 - 796
[22] The Magnetic Properties of Nanocomposites Fe-Co/C Based on Polyacrylonitrile
Bulatov, M. F.
Kozitov, L. V.
Muratov, D. G.
Karpacheva, G. P.
Popkova, A. V.
JOURNAL OF NANOELECTRONICS AND OPTOELECTRONICS, 2014, 9 (06) : 828 - 833
[23] Shell/core structure and magnetic properties of carbon-coated Fe-Co(C) nanocapsules
Zhang, ZD
Zheng, JG
Skorvanek, I
Wen, GH
Kovac, J
Wang, FW
Yu, JL
Li, ZJ
Dong, XL
Jin, SR
Liu, W
Zhang, XX
JOURNAL OF PHYSICS-CONDENSED MATTER, 2001, 13 (09) : 1921 - 1929
[24] Electronic and magnetic properties of ultrathin Fe-Co alloy nanowires
Jo, C
Lee, JI
Jang, Y
CHEMISTRY OF MATERIALS, 2005, 17 (10) : 2667 - 2671
[25] Analysis of Selected Magnetic Properties of Fe-Co Powdered Compacts
Oleksakova, Denisa
Kollar, Peter
Fuzer, Jan
APPLIED PHYSICS OF CONDENSED MATTER (APCOM 2021), 2021, 2411
[26] PREPARATION AND MAGNETIC-PROPERTIES OF FE-CO FINE PARTICLES
KISHIMOTO, M
NAKAZUMI, T
OTANI, N
SUEYOSHI, T
IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (06) : 4645 - 4647
[27] Magnetic and magnetocaloric properties in La-(Fe-Co)-Si
Hai Yen Nguyen
Thi Thanh Pham
Huu Duc Nguyen
Dang Thanh Tran
The-Long Phan
Cho Yu Seong
Huy Dan Nguyen
ADVANCES IN NATURAL SCIENCES-NANOSCIENCE AND NANOTECHNOLOGY, 2013, 4 (02)
[28] Novel Hybrid Ferromagnetic Fe-Co/Nanodiamond Nanostructures: Influence of Carbon on Their Structural and Magnetic Properties
Ziogas, Panagiotis G.
Bourlinos, Athanasios B.
Chatzopoulou, Polyxeni
Dimitrakopulos, George P.
Markou, Anastasios
Douvalis, Alexios P.
MAGNETOCHEMISTRY, 2024, 10 (05)
[29] The Effect of Synthesis Parameters on the Catalytic Synthesis of Multiwalled Carbon Nanotubes using Fe-Co/CaCO3 Catalysts
Mhlanga, Sabelo D.
Mondal, Kartick C.
Carter, Robin
Witcomb, Michael J.
Coville, Neil J.
SOUTH AFRICAN JOURNAL OF CHEMISTRY-SUID-AFRIKAANSE TYDSKRIF VIR CHEMIE, 2009, 62 : 67 - U90
[30] Synthesis and characterization of magnetic Fe and Fe-Co polypyrrole-encapsulated nanoparticles
Longoria, Nicolle
Morales, Ricardo
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2016, 251

← 1 2 3 4 5 →