Practical Electron Microscopy and Database

An Online Book, Second Edition by Dr. Yougui Liao (2006)

Practical Electron Microscopy and Database - An Online Book

Table of Contents/Index

Chapter/Index: Introduction | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Appendix

A-centered lattices/A-centering & its space groups  
Monoclinic
A2/a (C2/c , 15) A2/m space group
Orthorhombic
Amm2 (38) Abm2 (39)
Ama2 (40) Aba2 (41)
A21am (Cmc21, 36)  
 
A-planes of sapphire crystal Ab-initio methods used in EELS  
Abbe's equation: resolution limit of microscopes Abma (Cmca, Bmab, 64) space group
 
Aberration coefficients of electron microscopes  
Aberration coefficient C1,2/A1: two-fold axial astigmatism and its corrections in TEMs  Aberration coefficient C2,1 (B2): axial coma aberration
Shape similarity of aberrations in terms of azimuthal symmetry Third order aberrations
Spherical aberration Spot/beam size and shape limited by aberrations
Aberrations with four fold symmetry Aberrations with two fold symmetry
Aberration in EELS imaging Off-axis aberrations in EMs
 
Aberration coefficients reflected in Ronchigram  
4-fold parasitic aberrations shown in Ronchigram after aberration correction Segmental Ronchigram autocorrelation function matrix (SRAM) for aberration correction
Aberration corrections/alignments/correctors
Aberration correction in CTEM Aberration correction in STEM
Delta-type aberration correctors Aberration correction for HAADF imaging
Aberration corrections in TEM-EELS system Advantages of EMs with aberration correctors
Application of aberration corrections Improvement of spatial resolution using aberration correction in TEM/STEM
Coma aberration correction in EMs Spherical aberration correction 
Fifth-order aberration correction Comparison between aberration-corrected and uncorrected EMs
Image contrast in aberration-corrected EMs Position and length of aberration correctors
Manually correctable aberrations Beam tilt in aberration corrected TEM
Second-order aberration corrections Reversing sign of aberrations
EELS & EFTEM measurements in aberration corrected TEMs Operation of aberration correctors
Probe current affected by aberration corrections Electron-probe intensity distribution depending on aberrations
Zemlin tableaus method Applicable larger convergence angle in aberration-corrected EMs
Segmental Ronchigram autocorrelation function matrix (SRAM) for aberration correction Usage of aberration correctors
Correction of electron optical aberrations in EFTEM EDS measurements in aberration corrected TEMs
Correction of 3rd order star aberration (S3)  
Aberration correction: Indirect aberration corrections
Aberration correction using off-axis electron holography technique Aberration correction through-focus series reconstruction
Aberration determinations
Determination of the spherical aberration coefficient Aberration determinations by image shift due to tilting illumination
Aberration measurement method based on diffractogram Aberration coefficients determined by defocus-based techniques
Aberration determination by focal sets of Ronchigram  
Aberration of ray
Coherent aberrations Incoherent aberrations in EMs
Aberrations in electromagnetic lenses in EMs Aberration & beam spread/convergence
Chromatic aberration  Coma aberration in EMs
Focusing properties of electromagnetic lenses affected by aberrations Geometric aberration
Spherical aberration Diffraction & aberration 
Incoherent aberrations in EMs Wave aberration function
Aberrations and imaging requirements for small field of view in EMs Aberration in well-aligned EMs 
Aberrations versus working distance in SEMs Wavefunction affected by aberrations in CTEM
Wavefunction affected by aberrations in STEM Shape similarity of aberrations in terms of azimuthal symmetry
Aberration dependence of angle of electron rays Third order aberrations
Parasitic aberrations in multipole corrector optics Aberrations and imaging requirements for large field of view in EMs
Spatial resolution limit affected by aberrations  
Absorption 
EELS detection of molecularly adsorbed species on surfaces Absorption edge energy
Near Edge X-Ray Absorption Fine Structure (NEXAFS) X-Ray Absorption Near Edge Structure (XANES)
X-ray absorption coefficient of typical materials Periodic table of X-ray absorption edges
Electron absorption EM specimen (& thickness dependence) Fraction of absorbed electrons depending on sample thickness
Purchase/buy/sale/service of TEM systems and acceptance specifications of new systems  
Accelerating voltage/tube in EMs and its Best-Known Methods (BKM)
Spatial resolution improved by increasing accelerating voltage in EMs Dependence of Cs and Cc aberrations on accelerating voltage of beam
Dependence of radiation damage on accelerating voltage of electrons Dependence of EDS on accelerating voltages of incident electrons
Dependence of EELS/EFTEM on accelerating voltages of incident electrons SEM spatial resolution affected by accelerating voltage of electron beam
Electron backscattering affected by accelerating voltage STEM imaging affected by accelerating voltage of electron beam
Backscattered electron imaging affected by accelerating voltage of electron beam Accelerating voltage dependence of scattering cross-section for ionization
Instability in accelerating voltage of electron beam Dependence of observable thickness on accelerating voltage in TEM/STEM
Dependence of image contrast on accelerating voltage in TEM/STEM van de Graaff generators
Properties of accelerated electrons  
Accuracies in EM Measurements
Accuracy of EDS quantification Accuracy of EELS measurement
Accuracy of lattice spacing measurements by HRTEM/FFT/electron diffraction Accuracy of angle measurement in HRTEM images
Accuracy of CD (critical dimension) measurements using TEM Improvement of EDS analysis accuracy
Accuracy of CBED patterns Accuracy of strain measurement by CBED
Accuracies of beam tilt & of alignment of zone axis  
ACD (anti-contamination device) 
ACD (anti-contamination device) operation on TEM system  
Adhesion
Adhesion between gold and other materials  
Acronyms/abbreviations used in microscopy and materials Active voltage contrast (AVC) in FIB and SEM
CMOS Monolithic Active Pixel Sensors (MAPS) direct electron detectors Hybrid Pixel Array Detector (PAD): A direct electron detector
Activation energy of diffusion Activation energy for electromigration (EM)
Advanced TEM-related measurements semiconductor failure analyses: Challenges/Difficulties
Advanced/latest transmission electron microscopes (TEMs/STEMs) Thin TEM sample to avoid multiple/plural scattering
EM improvements for reducing beam damage Advanced/atomic/high resolution/latest SEMs
Advantages & disadvantages
Advantages of EMs with aberration correctors Advantages and disadvantages of FIB technology for EM sample preparations
Advantages and disadvantages of low-/high-voltage TEM and STEM Advantages and disadvantages of TEM-related techniques
Air 
Pressurized air for EM parts Airlocks
Aircraft and aerospace industry  
Airy disc Achromatic configurations/lenses/achromats
Achromatic-aplanatic lenses in EMs Actuators
Achromaticity correction in EFTEM Aging in ferroelectrics
Agglomerations
Agglomeration in titanium silicide films  
Alignment in EMs  
Gun-alignment/adjustment and its coil control system Aberration in well-aligned EMs
Alignment of objective lens axis Spherical aberration affected by beam alignments
Chromatic aberration affected by beam alignments Spatial resolution/resolving power affected by beam alignments
Beam alignment between condenser and objective lenses  
Alkali metals 
Alkali metals in Periodic table   EELS of alkali metals
Alkaline hydroxide  
Allowed reflections/diffraction of common crystal structures  
Alloy
Electromigration resistance induced by alloying Gibbs free energy change due to alloy formation
Shape memory alloys Alloy liquid metal ion sources for advanced FIBs
High entropy alloys (HEAs)  
 Aluminum
EELS measurement of aluminum EDS measurements of Al
Aluminides
AlGaInP AlGaAs
AlN AlAs
AlP AlCl3
Al–X phase diagrams AlxWy
Ca3Al2Si3O12 Spinel (MgAl2O4)
Carbon-coated aluminum Special application of Al material in EM-related devices
Aluminum-lithium (Al-Li) based alloys EFTEM imaging of aluminum
Atomic-number contrast of aluminum ions Al/Ti/W/TiN stack used for VLSI
LaAlO3 Zrx–Nby–Cuz–Nim–Aln alloys
Compound semiconductor XPS of aluminum and its related materials
Aluminum applied in EM systems Al-based metallic-glass alloys
Alumina (Al2O3)
Alpha (α)-alumina Gamma (γ)-alumina
Aluminum in ICs
Aluminum alloys for interconnections in ICs Al-Cu alloy
Amorphous materials
Diffractogram intensity of thin amorphous TEM specimen Analysis of amorphous materials
Thon rings in bright-filed imaging Fourier transform and FFT of HRTEM image of amorphous materials
Kikuchi pattern contrast of EBSD depending on amorphous layer on surface  Ronchigrams of amorphous films
TEM analysis of defects in amorphous materials   XRD patterns of amorphous materials
TEM analysis of short range ordering in amorphous materials HRTEM images & electron diffraction of amorphous metallic glasses
Analysis of interatomic spacing of amorphous materials using electron diffraction Analysis of free volume of amorphous materials using electron diffraction
Free volume change in amorphous materials induced by deformation Effect of amorphous layer on contrast of HRSEM images
Effects of amorphous layer and specimen thickness on high resolution STEM images Crystallization kinetics of amorphous materials
Difference of binding energies in amorphous and crystalline phases Tetrahedral structure in amorphous materials
HAADF-STEM images of amorphous metallic glasses Difference between bond lengths of amorphous and crystalline materials
Amorphization methods for alloys 
Amorphization of materials due to FIB deposition  Amorphous layer formed during EM sample preparation using Ar milling
Amorphous layer formed during EM sample preparation using FIB  
Amorphous materials: amorphous alloys
Amorphous CuxZry alloys  
Ammonium fluorosilicate [(NH4)2SiF6] Ampère-Maxwell law
Amplify  
Secondary electron detecting/amplifying system in EMs  
Amplitude & intensity of scattered wave by atoms Analog-to-digital (A/D) converter
Amplitudes of HRTEM image  
 Analytical electron microscopy (STEM/TEM) 
Periodic table for analytical TEM (EDS/EELS) analysis  
Electron energy-loss spectroscopy (EELS) Eenergy dispersive x-ray spectroscopy (EDS)
Convergent beam electron diffraction (CBED) Cathodoluminescence
Auger electron spectroscopy (AES) Electron beam induced current (EBIC)
Angles
Conversion between reciprocal space vector and angle Angle between two planes/plane normals/poles measured by Wulff net
Angle between normals to planes/in electron diffraction pattern Interfacial angles of cubic crystals
Cell angles in unit cells in crystals
TEM experimental determination of lattice parameters
Accuracy of angle measurement in HRTEM images Angle between directions
Angle between polarization vectors of adjacent domains in various crystalline phases in ferroelectrics Convergence semi-angle of the ion beam in a FIB system
Angles in SEM  
Angular distribution of secondary electrons Angular distribution/emission angle of secondary electron in SEM  
Angular/polar distribution of X-ray generation in electron microscopy  
Angular 
Transmitted angular-resolved electron scattering distribution
Angular spread of incident electrons
Angular distribution of signal/information from TEM measurements Angular dependence of milling in FIB
Angular dependence of elastic scattering of electrons Angular dependence of inelastic scattering of electrons
Angular distribution of inelastically scattered electrons  
Anode (A1/A2) in electron gun in EMs 
Anode wobbler in TEM  
Anode (negative) & cathode (positive) electrode materials for lithium batteries  
Anisotropy
Anisotropy of thermal expansion coefficients due to defects Anisotropy of physical and chemical properties of crystals
Anisotropic wet-etching Anisotropic materials
Impact of anisotropy on EELS intensity in anisotropic materials  
Annealing
Nitrogen atmosphere for annealing for semiconductors Structural relaxation of metallic glasses at elevated temperatures
Free volume change of metallic glasses at elevated temperatures Defects in crystals formed by ion-implantation and annealing
Dependence of crystallized fraction on annealing time and temperature  
Antiferroelectrics & Antiferroelectric materials Annular bright-field measurements
Comparison between BF (bright field), ADF (annular dark field) and HAADF (high angle annular dark field) STEM images  
Anti-reflective layer in EDS detector Antibonding
Antimony (Sb)  
(HAADF) STEM images of antimony (Sb) Atomic-number contrast of antimony ions
Misfit layer chalcogenides: (AX)1+δ(BX2)n (A =ˆ rare earth/Sn/Pb/Sb/Bi; B =ˆ Ti/V/Cr/Nb/Ta; X =ˆ S/Se) GexSbyTez (GST)
Sb-X phase diagrams  
Aperiodic crystals Aplanatic lenses/aplanatic points/aplanatic conditions/aplanats
Apertures 
Apertures in GIF camera  Aperture effect/function of lens
First aperture in electron gun for filtering electrons   Numerical aperture
Objective apertures in TEMs Condenser aperture in EMs
Stray aperture in EMs ADF-TEM (annular dark-field transmission electron microscopy) aperture
Aperture function Selected area diffraction (SAD) aperture
Contamination of apertures Optimal size of virtual objective apertures in STEM and SEM
Differential pumping aperture (DPA) in EMs Beam-defining aperture
EELS signal/intensity affected by collection & convergence angles & apertures Condenser 1 (C1) and condenser 2 (C2) lens/apertures
Spray & beam defining apertures in FIB Collection angles/apertures of EELS (Basics) 
Problems/damage of apertures High contrast aperture in TEMs
Artifacts induced by misalignment of condenser aperture  
Apple products: iPhone, iPad, & iPod touch, Apple watch & MacBook Array mask annotation on Gatan DigitalMicrograph
Argon (Ar)
Argon milling for TEM specimen preparation Ultrathin specimen preparation by low-energy Ar-ion milling
Argon implantation occurring in TEM sample milling process Amorphous layer formed during EM sample preparation using Ar milling
"Mottling" visible in FIB- and Ar-milled specimens Milling rate of materials with argon ion polishing
Comparison between FIB and Ar (argon) ion milling specimen preparations Argon ion sputtering yield in milling
EDS measurement of Argon (Ar) EELS measurement of Argon (Ar)
ASIC 1/2 pitch (in ICs)  
Areal Density (atoms per unit area)  
EELS intensity depending on areal density of atoms Areal density of atoms measured by EELS intensity
Arsenic (As) Arrow annotation on DM
Arsenides AlAs
AlGaAs GaAs
EELS of Arsenic (As) InAs
Compound semiconductor ZnSSe-based/GaAs heterostructures 
NanoMEGAS systems, Topspin, and ASTAR software package  
Multi beam inspection tool from ASML
Astigmatism/stigmators in EMs
Astigmatism correction coil control system in SEMs Condenser stigmators
Fifth-order 6-fold astigmatism Difference between axial coma and twofold astigmatism
Twofold astigmatism Fresnel fringes affected by objective astigmatism
Determination of threefold astigmatism (A2) in TEM measurements & its correction Astigmatism correction in EMs
Field astigmatism in TEMs Stigmators
Objective stigmator/astigmatism correction Astigmatism in STEMs
Spatial resolution affected by objective astigmatism Astigmatism corrections of condenser and objective lenses in TEM for magnetic materials
Correction of astigmatism of condenser lens using caustic image
Astigmatism effect on Fourier transform
 Aberration coefficient C1,2/A1: two-fold axial astigmatism and its corrections in TEMs 
Correction of astigmatism of objective lens in TEM using Fresnel fringes
Correction of astigmatism of objective lens in TEM based on diffractogram
Correction of astigmatism of objective lens using caustic image Correction of objective astigmatism with minimum background contrast technique
Asymmetry
Distortion/asymmetry of X-ray peak from Gaussian shape in EDS Asymmetric units in unit cells
Asymmetric electron diffraction patterns  
Atom
Number of atoms at surface of and in nanoparticles Number of lattice points (atoms) per unit cell
Atomic packing factor in crystals  
Atom column in crystal
Probability of containing m atoms in a single atom column in crystal Contrast of atoms in TEM
Atomic displacement
Atomic displacement parameter/factor & mean-square atomic displacement Cross-sections of atom displacement due to electron irradiation in bulk
Displacement energy for bulk and surface diffusion induced by electron irradiation Displacement energy for atoms in bulk and at sample surface due to electron irradiation
Displacement energy for surface sputtering/knock-on induced by electron irradiation Elemental (atomic) displacement threshold of chemical elements due to electron irradiation at sample surface
Energy transfer for atomic displacement/knock-on process due to electron irradiation Elemental (atomic) displacement threshold due to electron irradiation
Elemental (atomic) displacement threshold due to electron irradiation in bulk Displacement of atoms due to electron irradiation in EMs
Atomic number (Z)  
Dependence of inelastical scattering of electrons on atomic number Dependence of elastic scattering on atomic number
Dependence of thermal diffuse scattering on atomic number HRTEM analysis of light elements
Atomic & ionic radii and valence states of chemical elements in periodic table  
Artifacts
Artifacts in TEM contrast transfer patterns and profiles Artifact in image or spectrum with high probe current or analyzing on mobile elements
Contrast reversal in EMs Diffraction effects on EELS intensity
Artifacts in electron holography measurements Artifact in electron tomography
Artifacts in EFTEM images EELS artifacts due to misalignment of ZLP
Streaking artefacts in FFTs of TEM images Artifacts and drawbacks of XRD technique
Streaking artifacts in EELS images or profiles Artifacts/spurious x-rays in EDS measurements
Inaccuracy/artifacts in electron diffraction and spurious intensities Artifacts induced by misalignment of condenser aperture
Artifact reduction in EM image recording Streaking artifact in TEM/STEM images
Artifacts in CBED patterns EELS artifacts
Atomic 
Electron atomic scattering factors Atomic/high resolution/advanced/latest SEMs
Atomic weight of elements in periodic table   Atomic structure determination by EXELFS
Atomic short-range ordering Atomic point defects
Atomic arrangement in crystal structures (Atomic) density of different materials
Atom probe tomography (APT) Comparison among TEM, APT,ToF SIMS and ICP-MS
Atmospheric thin window (ATW) EDS detector Attenuation of light
Attenuation of AES (Auger Electron Spectroscopy) electrons Audio
Auger electron spectroscopy (AES)  
Electron relaxation and Auger electron generation  Comparison between EDS and AES
Mean free path of Auger electrons Responding time of Auger electron emission for electron irradiation
Auger detection in EMs Comparison between EELS and AES
AES transitions Yield of Auger electrons
Autofocus methods in TEM imaging Automotive hardware
Average energy loss/mean energy loss per inelastic electron collision  
Automatic functions
Automatic qualitative EDS analysis Automatically indexing TEM electron diffraction patterns using machine learning
iFast (Integrated Fast Automation Software Technology) Quartz PCI-AM (Passive Capture Interface - Automated Measurement)
Axial/axis
Effects of axial illumination conditions in TEM system Axial coma aberration in EMs
Accuracies of beam tilt & of alignment of zone axis  
Azimuthal and radial circles/Ronchigram in STEM