scholarly journals Structural Characterization of Semiconductor Heterostructures by Atomic Resolution Z-Contrast Imaging at 300Kv

1993 ◽  
Vol 326 ◽  
Author(s):  
A. J. McGibbon ◽  
S. J. Pennycook ◽  
Z. Wasilewski
Keyword(s):  
Structural Characterization ◽  
Semiconductor Heterostructures ◽  
Atomic Resolution ◽  
Contrast Imaging ◽  
Z Contrast

Synthesis and Structural Characterization of Ferromagnetic Au/Co Nanoparticles

2014 ◽  
Vol 1708 ◽  
Author(s):  
Nabraj Bhattarai ◽  
Subarna Khanal ◽  
Daniel Bahena ◽  
Robert L. Whetten ◽  
Miguel Jose-Yacaman
Keyword(s):  
Quantum Interference ◽  
Magnetic Measurements ◽  
Ferromagnetic Behavior ◽  
Contrast Imaging ◽  
Uniform Size ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
Co Nanoparticles ◽  
Z Contrast

ABSTRACTThe synthesis of bimetallic magnetic nanoparticles is very challenging because of the agglomeration and non-uniform size. In this paper, we present the synthesis of monodispersed 3-5 nm sized thiolated bimetallic alloyed Au/Co nanoparticles with decahedral and icosahedral shape, their characterization using Cs-corrected scanning transmission electron microscopy (STEM) and magnetic measurements using superconducting quantum interference device (SQUID) magnetometer. The Z-contrast imaging and energy dispersive X-ray spectroscopy (EDS) mapping showed an inhomogeneous alloying with minor segregation between Au and Co at nanoscale and the SQUID measurement exhibited the ferromagnetic behavior.

Atomic resolution Z-contrast imaging of semiconductors

2000 ◽  
Vol 49 (2) ◽  
pp. 231-244 ◽  
Author(s):  
Y. Xin ◽  
E. M. James ◽  
N. D. Browning ◽  
S. J. Pennycook
Keyword(s):  
Atomic Resolution ◽  
Contrast Imaging ◽  
Z Contrast

Quantitative HREM: Reliable Structure Determination of Grain Boundaries in SrTiO3

2001 ◽  
Vol 7 (S2) ◽  
pp. 310-311
Author(s):  
Thomas Gemming
Keyword(s):  
Imaging Techniques ◽  
Quantitative Information ◽  
Small Error ◽  
Atomic Resolution ◽  
Short Exposure ◽  
Contrast Imaging ◽  
Short Exposure Time ◽  
Analysis Of The Images ◽  
Pm 10 ◽  
Z Contrast

High resolution transmission electron microscopy (HREM) is an excellent experimental method to image grain boundary structures with atomic resolution. The advantage of the method is the short exposure time of only about one second that is needed to record an image. Other methods like Z-contrast imaging require much longer exposure times and are therefore much more prone to specimen drift during recording. However there is the remaining difficulty to HREM that the evaluation of experimental images is not straightforward and a thorough analysis of the images is necessary in order to deduce quantitative information with small error bars of only a few pm (10-15m). A second inherent difficulty common to all atomic resolution imaging techniques is that the information is retrieved from a very small area of a specimen. The question arising from that is: can we nevertheless be sure to obtain a representative answer to a “real world” material science problem? A positive answer to this question is given by the investigations presented here.

Measuring spin-state and ferromagnetic transitions in La1-xSrxCoO3 using in-situ atomic-resolution Z-contrast imaging and EELS in

2012 ◽  
Vol 18 (S2) ◽  
pp. 380-381
Author(s):  
A. Gulec ◽  
R.F. Klie
Keyword(s):  
Spin State ◽  
Atomic Resolution ◽  
Contrast Imaging ◽  
Z Contrast

Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.

scholarly journals Atomic Resolution Z-Contrast Imaging of the Interface Between Non-Polar a-ZnO Grown on r-Cut Al2O3 by Pulsed Laser Deposition

2010 ◽  
Vol 16 (S2) ◽  
pp. 154-155
Author(s):  
H Zhou ◽  
MF Chisholm ◽  
P Pant ◽  
J Gazquez ◽  
SJ Pennycook ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Atomic Resolution ◽  
Contrast Imaging ◽  
Z Contrast

Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – August 5, 2010.

scholarly journals Quantitative Analysis of Atomic Resolution HAADF-STEM (Z-contrast) Imaging for PbTiO3 / SrTiO3 Substrate Dielectric Thin Films

2006 ◽  
Vol 12 (S02) ◽  
pp. 1352-1353 ◽  
Author(s):  
Y Kotaka ◽  
K Honda ◽  
T Yamazaki ◽  
K Watanabe ◽  
H Fujisawa ◽  
...  
Keyword(s):  
Thin Films ◽  
Quantitative Analysis ◽  
Atomic Resolution ◽  
Contrast Imaging ◽  
Dielectric Thin Films ◽  
Srtio3 Substrate ◽  
Z Contrast

Extended abstract of a paper presented at Microscopy and Microanalysis 2006 in Chicago, Illinois, USA, July 30 – August 3, 2006

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