Design of a self-aligned, wide temperature range (300 mK-300 K) atomic force microscope/magnetic force microscope with 10 nm magnetic force microscope resolution

Karcı, Özgür; Dede, Munir; Oral, Ahmet

doi:10.1063/1.4897147

Cited by 9 publications

(4 citation statements)

References 33 publications

(40 reference statements)

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“…The annealed sample was imaged using a low-temperature atomic force/magnetic force microscope (LT-AFM/MFM) (NanoMagnetics Instruments Ltd., Oxford, UK) at 300 K in PPMS. 18 In Figure 2a, a topography image of the sample shows how NPs are distributed on the silicon surface. The average height of the NPs was approximately 5 nm, which is compatible with the TEM results.…”

Section: Resultsmentioning

confidence: 99%

Phase transition of chemically synthesized FePt nanoparticles under high pressure

Şimşek¹,

Karcı²,

Özcan³

2018

Turk J Chem

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We present the results of a study related to phase transformation of chemically synthesized FePt nanoparticles under high pressure from face-centered cubic into face-centered tetragonal structure. As-synthesized nanoparticles are around 4.5 nm and show superparamagnetic behavior at 300 K. After annealing under 60 bar pressure of hydrogen at 400 • C for 2 h, nanoparticles exhibit strong ferromagnetic behavior with 5391 Oe coercivity. Results show that highpressure annealing lowers the decomposition temperature of the surfactants surrounding nanoparticles and partially hinders agglomeration arising from heat treatment. The promising ferromagnetic properties of the FePt nanoparticles after annealing under high pressure make them suitable for ultrahigh-density memory devices.

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Section: Resultsmentioning

confidence: 99%

Phase transition of chemically synthesized FePt nanoparticles under high pressure

Şimşek¹,

Karcı²,

Özcan³

2018

Turk J Chem

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“…According to the preference of the experimentalist, signal generation can be based predominantly on two-beam interference of Michelson-type or multi-beam interference of Fabry–Pérot-type, the latter with either low or high finesse. While a Michelson-type interferometer is simple in adjustment and robust in operation [ 27 – 28 ], the high-finesse cavity of a Fabry–Pérot interferometer yields high optical signal amplification but requires a sophisticated cavity design or active stabilization [ 29 – 31 ].…”

Section: Discussionmentioning

confidence: 99%

Understanding interferometry for micro-cantilever displacement detection

Schmidsfeld¹,

Nörenberg²,

Temmen³

et al. 2016

Beilstein J. Nanotechnol.

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SummaryInterferometric displacement detection in a cantilever-based non-contact atomic force microscope (NC-AFM) operated in ultra-high vacuum is demonstrated for the Michelson and Fabry–Pérot modes of operation. Each mode is addressed by appropriately adjusting the distance between the fiber end delivering and collecting light and a highly reflective micro-cantilever, both together forming the interferometric cavity. For a precise measurement of the cantilever displacement, the relative positioning of fiber and cantilever is of critical importance. We describe a systematic approach for accurate alignment as well as the implications of deficient fiber–cantilever configurations. In the Fabry–Pérot regime, the displacement noise spectral density strongly decreases with decreasing distance between the fiber-end and the cantilever, yielding a noise floor of 24 fm/Hz0.5 under optimum conditions.

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“…The localization of the electrons as shown in Fig. 3 makes the graphitic nanocone a possible candidate for the construction of a new type of scanning probe in atomic force microscopy [12][13][14][15]. ACKNOWLEDGEMENTS -The work was supported by the Science and Technology Assistance Agency under Contract No.…”

Section: Discussionmentioning

confidence: 99%

Spin-orbit interaction in the graphitic nanocone

2015

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The Hamiltonian for nanocones with curvature-induced spin-orbit coupling have been derived. The effect of curvature-induced spin-orbit coupling on the electronic properties of graphitic nanocones is considered. Energy spectra for different numbers of the pentagonal defects in the tip of the nanocones are calculated. It was shown that the spin-orbit interaction considerably affects the local density of states of the graphitic nanocone. This influence depends on the number of defects present at the tip of the nanocone. This property could be applied in atomic force microscopy for the construction of the probing tip.

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Design of a self-aligned, wide temperature range (300 mK-300 K) atomic force microscope/magnetic force microscope with 10 nm magnetic force microscope resolution

Cited by 9 publications

References 33 publications

Phase transition of chemically synthesized FePt nanoparticles under high pressure

Phase transition of chemically synthesized FePt nanoparticles under high pressure

Understanding interferometry for micro-cantilever displacement detection

Spin-orbit interaction in the graphitic nanocone

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