Optimal ferromagnetically-coated carbon nanotube tips for ultra-high resolution magnetic force microscopy

Lisunova, Yuliya; Heidler, J.; Levkivskyi, Ivan P.; Gaponenko, Iaroslav; Weber, A; Caillier, Christophe; Heyderman, Laura J.; Kläui, Mathias; Paruch, Patrycja

doi:10.1088/0957-4484/24/10/105705

Cited by 14 publications

(14 citation statements)

References 25 publications

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“…Surface acid-base properties of the pristine and functionalized MWCNTs at the solid-liquid interface were estimated by determining the PZC according to the standard drift test method (equilibrium pH at high loading) [63][64][65][66]. 1 g of each MWCNT samples was placed in 20 ml of aqueous solutions with different initial values of pH (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13). Then the obtained suspension was stirred on a magnetic stirrer for 1 h at 250 rpm.…”

Section: Point Of Zero Charge (Pzc) Measurementsmentioning

confidence: 99%

“…The decoration of multi-walled carbon nanotubes (MWCNTs) by cobalt nanoparticles expands the range of their functional properties by providing them with new magnetic, catalytic, electronic and electro-magnetic characteristics. MWCNTs filled with magnetic Co-containing nanoparticles have been proved to be useful for multiple innovations in nanotechnology [1][2][3], Li/air batteries [4][5][6][7][8], magnetic-storage devices [9], magnetic composites for drug delivery [10,11], catalysts for different processes [12][13][14][15][16][17][18], as well as absorption and microwave irradiation shielding material [19][20][21][22][23][24][25][26][27][28][29][30]. It is generally accepted that the magnetic properties of nanoparticles are determined by many factors, such as chemical composition [20,[31][32][33][34][35], crystallinity [36,37], size [37][38][39][40][41] and shape [35,<...>…”

Section: Introductionmentioning

confidence: 99%

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Co metal nanoparticles deposition inside or outside multi-walled carbon nanotubes via facile support pretreatment

Kazakova

Andreev

Selyutin

et al. 2018

Applied Surface Science

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Decoration of one-dimensional multi-walled carbon nanotubes (MWCNTs) with zerodimensional Co nanoparticles leads to hybrid structures with chemical and electromagnetic features that are not available to the individual components. This work addresses the influence of the nature and structure of MWCNTs on the localization of Co nanoparticles. Depending on synthesis conditions, Co can be deposited on the external or in inner surfaces of the nanotubes. Co/MWCNTs hybrids have been characterized by in situ X-ray powder diffraction, highresolution transmission electron microscopy and 59 Co internal field nuclear magnetic resonance. It has been shown that the average diameter (7.2, 9.4 and 18.6 nm), number of walls (5-7, 12-15, 15-20), and functional composition of the MWCNTs have a remarkable effect on the size of Co nanoparticles and their distribution in the structure of MWCNTs. The observed phenomenon has 2 been rationalized in terms of nanotubes surface properties. Parent MWCNTs being hydrophobic and having limited porosity do not stabilize Co nanoparticles and, therefore, they are localized on the outside surface with relatively large average size and broad size distribution. On the other hand, the oxidation of the MWCNTs resulted in the penetration of Co nanoparticles inside of the nanotubes, presumably because of pore opening as well as increased hydrophilicity of the nanotubes.

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Section: Point Of Zero Charge (Pzc) Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Co metal nanoparticles deposition inside or outside multi-walled carbon nanotubes via facile support pretreatment

Kazakova

Andreev

Selyutin

et al. 2018

Applied Surface Science

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“…[17,18] Magneto-optical microscopy can offer ultrafast (sub-ps) temporal resolution, but has moderate spatial resolution, [19] unless delicate nearfield approaches are used. [20] Scanning probe techniques such as magnetic force microscopy (MFM) and scanning Hall probe microscopy (SHPM) offer a versatile laboratory-scale platform with high spatial resolution (sub-10 nm for MFM, [21] sub-200 nm for SHPM [22] ), but have poor temporal resolution. [1] Recently, a single spin scanning probe magnetometry technique has been developed [23][24][25][26][27] that uses an optically detected magnetic resonance from a nitrogen vacancy-doped diamond probe to resolve magnetic fields above samples achieving high spatial resolution (sub-20 nm) and high sensitivity (sub-10 µT Hz −½ ), but requires time averaging that limits temporal resolution.…”

mentioning

confidence: 99%

Wide Field Magnetic Luminescence Imaging

Hodges

Grell

Morley

et al. 2017

Adv Funct Materials

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This study demonstrates how magnetic-field-dependent luminescence from organic films can be used to image the magnetic configuration of an underlying sample. The organic semiconductors tetracene and rubrene exhibit singlet exciton fission, which is a process sensitive to magnetic fields. Here, thin films of these materials were characterized using photoluminescence spectrometry, atomic force microscopy, and photoluminescence magnetometry. The luminescence from these substrate-bound thin films is imaged to reveal the magnetic configuration of underlying Nd-Fe-B magnets. The tendency of rubrene to form amorphous films and produce large changes in photoluminescence under an applied magnetic field makes it more appropriate for magnetic field imaging than tetracene. This demonstration can be extended in the future to allow simple microscopic imaging of magnetic structure.

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“…al. [17] developed a carbon nanotube on the conventional MFM tip to obtain high resolution MFM images. Nyamjav et.…”

Section: Introductionmentioning

confidence: 99%

Compensation of the magnetic force imaging by scanning directions

Liu

et al. 2017

Micron

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It was found that the results of magnetic force microscope (MFM) imaging were different with the probe scanning directions. This paper studied the effect of scanning directions on the MFM imaging, and a method for the distortion compensation was proposed to reduce the errors. In the study, three different scanning directions with the angles of 0°, 45° and 90° were used to measure the magnetic domain structures distributions of magnetic sample. The experimental results have shown that the scanning direction parallel to the magnetic domain structure will cause a minimum phase shift difference and lead to a structure distortion. A method for compensating the distortions was proposed. With this method, the distorted structures were corrected and the effect of scanning directions on the MFM imaging was significantly reduced. This work provides a way for the acquisition of the correct images of magnetic structures using an MFM and the improvement of imaging quality in a wide range of MFM applications.

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Optimal ferromagnetically-coated carbon nanotube tips for ultra-high resolution magnetic force microscopy

Cited by 14 publications

References 25 publications

Co metal nanoparticles deposition inside or outside multi-walled carbon nanotubes via facile support pretreatment

Co metal nanoparticles deposition inside or outside multi-walled carbon nanotubes via facile support pretreatment

Wide Field Magnetic Luminescence Imaging

Compensation of the magnetic force imaging by scanning directions

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