Magnetic behavior of iron-filled multiwalled carbon nanotubes

被引：92

作者：

Karmakar, S

Sharma, SM

Mukadam, MD

Yusuf, SM

Sood, AK

机构：

[1] Bhabha Atom Res Ctr, Synchrotron Radiat Sect, Bombay 400085, Maharashtra, India

[2] Bhabha Atom Res Ctr, Div Solid State Phys, Bombay 400085, Maharashtra, India

[3] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India

来源：

JOURNAL OF APPLIED PHYSICS | 2005年 / 97卷 / 05期

关键词：

D O I：

10.1063/1.1858878

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using vibrating-sample magnetometry, magnetic properties of iron-filled multiwalled carbon nanotubes have been investigated. The field dependence of dc magnetization at high magnetic fields suggests that these tubes behave as a one-dimensional exchange-coupled ferromagnetic system. At 5 K, the saturation magnetization (M-S) of the nanowires is found to be 85 emu/g, which is much less than the expected bulk value similar to 210 emu/g. The observed exchange bias, in spite of the small fraction of gamma-Fe in our samples, implies that gamma-Fe may not be the only antiferromagnetic component responsible for the exchange bias in these Fe-filled carbon nanotubes. Quantitative study on the temperature dependence of saturation magnetization, remanent magnetization and coercivity has been carried out. (C) 2005 American Institute of Physics.

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共 30 条

[1] Synthesis and magnetic behavior of an array of nickel-filled carbon nanotubes [J].

Bao, JC ;

Zhou, QF ;

Hong, JM ;

Xu, Z .

APPLIED PHYSICS LETTERS, 2002, 81 (24) :4592-4594

[2] Disordered magnetism at the grain boundary of pure nanocrystalline iron [J].

Bonetti, E ;

Del Bianco, L ;

Fiorani, D ;

Rinaldi, D ;

Caciuffo, R ;

Hernando, A .

PHYSICAL REVIEW LETTERS, 1999, 83 (14) :2829-2832

[3] An integrated nanoliter DNA analysis device [J].

Burns, MA ;

Johnson, BN ;

Brahmasandra, SN ;

Handique, K ;

Webster, JR ;

Krishnan, M ;

Sammarco, TS ;

Man, PM ;

Jones, D ;

Heldsinger, D ;

Mastrangelo, CH ;

Burke, DT .

SCIENCE, 1998, 282 (5388) :484-487

[4]

GOBERT N, 1999, APPL PHYS LETT, V75, P3363

[5] Invar effect in fcc-FeCu solid solutions -: art. no. 214421 [J].

Gorria, P ;

Martínez-Blanco, D ;

Blanco, JA ;

Hernando, A ;

Garitaonandia, JS ;

Barquín, LF ;

Campo, J ;

Smith, RI .

PHYSICAL REVIEW B, 2004, 69 (21) :214421-1

[6] ELECTRONIC-STRUCTURE, X-RAY PHOTOEMISSION SPECTRA, AND TRANSPORT-PROPERTIES OF FE3C (CEMENTITE) [J].

HAGLUND, J ;

GRIMVALL, G ;

JARLBORG, T .

PHYSICAL REVIEW B, 1991, 44 (07) :2914-2919

[7] Two-dimensional detector software: From real detector to idealised image or two-theta scan [J].

Hammersley, AP ;

Svensson, SO ;

Hanfland, M ;

Fitch, AN ;

Hausermann, D .

HIGH PRESSURE RESEARCH, 1996, 14 (4-6) :235-248

[8] MAGNETIC-SUSCEPTIBILITY OF CARBON STRUCTURES [J].

HEREMANS, J ;

OLK, CH ;

MORELLI, DT .

PHYSICAL REVIEW B, 1994, 49 (21) :15122-15125

[9] MAGNETIC-PROPERTIES OF IRON IN NANOCAPSULES [J].

HIHARA, T ;

ONODERA, H ;

SUMIYAMA, K ;

SUZUKI, K ;

KASUYA, A ;

NISHINA, Y ;

SAITO, Y ;

YOSHIKAWA, T ;

OKUDA, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1994, 33 (1A) :L24-L25

[10] Dimensionality of a system of exchange-coupled grains and magnetic properties of nanocrystalline and amorphous ferromagnets [J].

Iskhakov, RS ;

Komogortsev, SV ;

Balaev, AD ;

Chekanova, LA .

JETP LETTERS, 2000, 72 (06) :304-307