Cited 2 time in webofscience Cited 3 time in scopus

Magnetic Susceptibility Study of Sub-Pico-emu Sample Using a Micromagnetometer: An Investigation through Bistable Spin-Crossover Materials

Title
Magnetic Susceptibility Study of Sub-Pico-emu Sample Using a Micromagnetometer: An Investigation through Bistable Spin-Crossover Materials
Authors
Kamara, S.Tran, Q.-H.Davesne, V.Félix, G.Salmon, L.Kim, Kun WooKim, Cheol GiBousseksou, A.Terki, F.
DGIST Authors
Kim, Kun Woo; Kim, Cheol Gi
Issue Date
2017-12
Citation
Advanced Materials, 29(46)
Type
Article
Article Type
Article in Press
Keywords
Magnetic fieldsMagnetic susceptibilityExperimental approachesExperimental methodsMagneto resistive sensorsSelf-generated magnetic fieldsSelf-magnetic fieldsSpin crossover materialsSpin crossoversTheoretical modelingMagnetism
ISSN
0935-9648
Abstract
A promising and original method to study the spin-transition in bistable spin-crossover (SCO) materials using a magnetoresistive multiring sensor and its self-generated magnetic field is reported. Qualitative and quantitative studies are carried out combining theoretical and experimental approaches. The results show that only a small part of matter dropped on the sensor surface is probed by the device. At a low bias-current range, the number of detected nanoparticles depends on the amplitude of the current. However, in agreement with the theoretical model, the stray voltage from the particles is proportional to the current squared. By changing both the bias current and the concentration of particle droplet, the thermal hysteresis of an ultrasmall volume, 1 × 10-4 mm3, of SCO particles is measured. The local probe of the experimental setup allows a highest resolution of 4 × 10-14 emu to be reached, which is never achieved by experimental methods at room temperature. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
URI
http://hdl.handle.net/20.500.11750/4749
DOI
10.1002/adma.201703073
Publisher
Wiley-VCH Verlag
Related Researcher
  • Author Kim, CheolGi Lab for NanoBio-MatErials & SpinTronics(nBEST)
  • Research Interests Magnetic Materials and Spintronics; Converging Technology of Nanomaterials and Biomaterials; Bio-NEMS;MEMS
Files:
There are no files associated with this item.
Collection:
Department of Emerging Materials ScienceLab for NanoBio-Materials & SpinTronics(nBEST)1. Journal Articles


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