Magnetic Skyrmions in a Thickness Tunable 2D Ferromagnet from a Defect Driven Dzyaloshinskii–Moriya InteractionFri Sep 23 2022
There is considerable interest in van der Waals (vdW) materials as potential hosts for chiral skyrmionic spin textures. Of particular interest is the ferromagnetic, metallic compound Fe3GeTe2 (FGT), which has a comparatively high Curie temperature (150–220 K). Several recent studies have reported the observation of chiral Néel skyrmions in this compound, which is inconsistent with its presumed centrosymmetric structure.*
In the article “Magnetic Skyrmions in a Thickness Tunable 2D Ferromagnet from a Defect Driven Dzyaloshinskii–Moriya Interaction” Anirban Chakraborty, Abhay K. Srivastava, Ankit K. Sharma, Ajesh K. Gopi, Katayoon Mohseni, Arthur Ernst, Hakan Deniz, Binoy Krishna Hazra, Souvik Das, Paolo Sessi, Ilya Kostanovskiy, Tianping Ma, Holger L. Meyerheim and Stuart S. P. Parkin report the observation of Néel type skyrmions in single crystals of FGT via Lorentz transmission electron microscopy (LTEM).*
Since LTEM requires transmission of electrons through the sample thickness, the authors investigated the thicker lamella L2 using only magnetic force microscopy (MFM). *
For MFM measurements, the lamella was transferred on a prepatterned silicon substrate to be easily accessible by MFM tip. The measurements were performed in a vacuum and NANOSENSORS™ SuperSharpSilicon™ AFM probes for magnetic force microscopy (SSS-MFMR) were used for all measurements. *
In the article it is shown from detailed X-ray diffraction structure analysis that FGT lacks an inversion symmetry as a result of an asymmetric distribution of Fe vacancies. This vacancy-induced breaking of the inversion symmetry of this compound is a surprising and novel observation and is a prerequisite for a Dzyaloshinskii–Moriya vector exchange interaction which accounts for the chiral Néel skyrmion phase. This phenomenon is likely to be common to many 2D vdW materials and suggests a path to the preparation of many such acentric compounds. *
Furthermore, it is found that the skyrmion size in FGT is strongly dependent on its thickness: the skyrmion size increases from ≈100 to ≈750 nm as the thickness of the lamella is increased from ≈90 nm to ≈2 µm. This extreme size tunability is a feature common to many low symmetry ferro- and ferri-magnetic compounds. *
Please have a look at the NANOSENSORS blog for the full citation and a direct link to the full article.
Impact of annealing on electric and elastic properties of 10-nm Hf0.5Zr0.5O2 films prepared on Si by sputteringFri Sep 16 2022
HfO2-based films are important materials used in broad range of electronic applications from high-performance transistors and memory cells, to thermoelectric and energy harvesting elements. * In the article “Impact of annealing on electric and elastic properties of 10-nm Hf0.5Zr0.5O2 films prepared on Si by sputtering” Leonid Bolotov, Shinji Migita, Ryouta Fujio, Manabu Ishimaru, Shogo Hatayama […]
Monitoring SARS-CoV-2 Surrogate TGEV Individual Virions Structure Survival under Harsh Physicochemical EnvironmentsWed Sep 14 2022
Successful airborne transmission of coronaviruses through fluid microdroplets requires a virion structure that must withstand harsh natural conditions. * Because of the strict biosafety requirements for the study of human respiratory viruses, it is important to develop surrogate models to facilitate their investigation. * In the article “Monitoring SARS-CoV-2 Surrogate TGEV Individual Virions Structure Survival […]
New nanotols blog postFri Sep 09 2022
New nanotools blog post: Young Modulus and Yield Strength of 2D Materials with Potential for Lightweight Composites
NanoAndMore Japan proudly sponsored this year's Bio-SPM Summer SchoolWed Aug 31 2022
NanoAndMore Japan proudly sponsored this year's Bio-SPM Summer School at
Kanazawa University (WPI-NanoLSI) in 22-27 Aug.2022.
https://nanolsi.kanazawa-u.ac.jp/…/applicatio…/summerschool/
https://nanolsi.kanazawa-u.ac.jp/…/applicatio…/summerschool/
The 4 winners of the best image contest got a supplementary prize from NanoAndMore Japan. https://www.nanoandmore.jp/
Congratulations!
2022年8月22日～27日に金沢大学ナノ生命科学研究所(WPI-NanoLSI) において第 10回Bio- SPM夏の学校が開催されましたWed Aug 31 2022
2022年8月22日～27日に金沢大学ナノ生命科学研究所(WPI-NanoLSI) において第
10回Bio- SPM夏の学校が開催されました。https://nanolsi.kanazawa-u.ac.jp/…/applicatio…/summerschool/
㈱NanoAndMoreジャパンも本活動を支援させていただきました。
最終日には開催期間中の研究成果から、4名の研究者に対し奨励賞が授与され、
加えてNanoAndMoreジャパン https://www.nanoandmore.jp/ から副賞が渡されました。
MikroMasch® platinum coated HQ:NSC18/Pt and NANOSENSORS™ conductive diamond coated CDT-CONTR AFM probes are used in this work on time dependent electrical contact resistance.Wed Aug 24 2022
Study on contact aging and its effect on electrical resistance in Conductive AFM measurements with the help of our MikroMasch® HQ:NSC18/Pt AFM probes
New nanotools blog postMon Aug 22 2022
Metrology Super Sharp (MSS): Heavy-Duty Carbon Tips for Very Narrow HAR Trenches
ElectriMulti75-G and ElectriTap300-G AFM probes perform measurements in KPFM modeThu Aug 11 2022
Our ElectriMulti75-G and ElectriTap300-G AFM probes perform measurements in KPFM mode to study corrosion at the buried interface of organic films and Al alloy.
NANOSCALE NONCOLLINEAR SPIN TEXTURES IN THIN FILMS OF A D2D HEUSLER COMPOUNDTue Aug 09 2022
Nanoscale Noncollinear Spin Textures in Thin Films of a D2d Heusler Compound
Magnetic nano-objects, namely antiskyrmions and Bloch skyrmions, have been found to coexist in single-crystalline lamellae formed from bulk crystals of inverse tetragonal Heusler compounds with D2d symmetry. * Skyrmions can be observed in real-space by various direct imaging techniques. * In the article “Nanoscale Noncollinear Spin Textures in Thin Films of a D2d Heusler Compound” […]
Elastic shell theory for plant cell wall stiffness reveals contributions of cell wall elasticity and turgor pressure in AFM measurementThu Aug 04 2022
The stiffness of a plant cell in response to an applied force is determined not only by the elasticity of the cell wall but also by turgor pressure and cell geometry, which affect the tension of the cell wall. Although stiffness has been investigated using atomic force microscopy (AFM) and Young’s modulus of the cell […]
#biology#ForceIndentation#plantmorphology#cellbiology#cellwallmechanics#mechanicalproperties # atomicforcemicroscopy #用于探针修改的无针尖悬臂梁#ティップレスAFMカンチレバー
Happy Swiss National Holiday with Smallest Swiss Cross!Mon Aug 01 2022
Happy Swiss National Holiday with Smallest Swiss Cross! We are celebrating today’s Swiss National Holiday courtesy of Basel University with the Smallest Swiss Cross – Made of 20 Single Atoms ( a NANOSENSORS PointProbePlus PPP-NCL AFM probe was used for this image)
Happy Birthday SwitzerlandMon Aug 01 2022
Happy Birthday Switzerland! It’s the Swiss National Holiday today. Have fun everyone!
OPUS 160AC-NA AFM Probes in use!Mon Jul 25 2022
Photophysical properties and fluorescence lifetime imaging of exfoliated near-infrared fluorescent silicate nanosheets with the help of our best-selling OPUS 160AC-NA AFM probes.
https://pubs.rsc.org/…/articlelanding/2021/NA/D1NA00238D
#AFMProbes #AtomicForceMicroscopy #silicatenanosheets
Happy birthday to Nobel Prize and Kavli Prize laureate Gerd Binnig!Wed Jul 20 2022
Happy birthday to Nobel Prize and Kavli Prize laureate Gerd Binnig, co-inventor of the Scanning Tunneling Microscope and the Atomic Force Microscope!
Electrochemically Synthesized Poly(3-hexylthiophene) Nanowires as Photosensitive Neuronal InterfacesTue Jul 19 2022
Poly(3-hexylthiophene) (P3HT), a hole-conducting polymer, generates a lot of interest especially because of its excellent optoelectronic properties (such as good electrical conductivity and high extinction coefficient) and good processability, which make this polymer an excellent choice for building organic optoelectronic devices (e.g., organic solar cells). Read more...
#P3HT #PolymerNanowires #biomaterials #OrganicOptoelectronicDevices #AFMtips #原子力显微镜 #AFMカンチレバー
The first Atomic Force Microscope Image on Mars was made 14 years ago!Sat Jul 09 2022
On this date 14 years ago, an atomic force microscope on NASA's Phoenix Mars Lander performed the first AFM measurement on Mars.
MikroMasch® HOPG ZYA as the graphene source and MikroMasch® HQ:NSC36/Al BS AFM Probe in useWed Jul 06 2022
Small graphene sealed nanocavities have potential applications as pressure sensors. In this paper hydrogen nanobubbles are induced electrochemically at graphene-mica interfaces. MikroMasch HOPG ZYA is used as the graphene source and MikroMasch HQ:NSC36/Al BS AFM probes are used to study the bubbles.
Highlights
AFM Probe Focus
best of the best
qp-HBC
uniqprobe™ - HeartBeat Cantilever for ScanAsyst®** and Peak Force Tapping™**
Coating:
Reflex Aluminum
Tip Shape: Circular symmetric
Tip Shape: Circular symmetric
AFM Cantilever:
F
60 kHz
C
0.5 N/m
L
115 µm
ATEC-NC
Tapping Mode AFM Probe with REAL Tip Visibility
Coating:
none
Tip Shape: Visible
Tip Shape: Visible
AFM Cantilever:
F
335 kHz
C
45 N/m
L
160 µm
TESPA
Standard Tapping Mode AFM Probe
Coating:
Reflex Aluminum
Tip Shape: Standard
Tip Shape: Standard
AFM Cantilever:
F
320 kHz
C
42 N/m
L
125 µm
OTESPA
Standard Tapping Mode AFM Probe with AFM Tip at the Very End of the AFM Cantilever
Coating:
Reflex Aluminum
Tip Shape: OPUS
Tip Shape: OPUS
AFM Cantilever:
F
300 kHz
C
26 N/m
L
160 µm
