Introduction

Backer, Annick De; Fatermans, Jarmo; Dekker, Arnold J. den; Aert, Sandra Van

doi:10.1016/bs.aiep.2021.01.001

Cited by 2 publications

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“…For an experimental image, observations are characterized as pixel values. The expectation at a pixel position (x, y) is described by a parametric model (De Backer et al, 2021) having a constant background, the width of the Gaussian peak, the column intensity (height of the peak), and the x and y coordinates of the initial expected atomic column positions as optimization parameters. The model employs the minimization of the least squares estimator function, calculating the difference between experimental images and Gaussian peak models (den Dekker et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Identification of the Bravais lattice and cell parameters through quantitative model-based transmission electron microscopy and Niggli cell reduction theory: the case of intermetallic Ni₅Pb₂Te₃

Kumar¹,

Ravishankar²,

Chattopadhay³

2023

J Appl Cryst

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This article demonstrates a simple and effective way to accurately determine the Bravais lattice type and cell parameters of an unknown phase by combining quantitative model-based high-resolution (scanning) transmission electron microscopy and Niggli cell reduction theory. This method was applied to the Ni5Pb2Te3 phase in the Ni–Pb–Te ternary system, which exists at high temperatures and forms from the interaction of Ni contacts with PbTe thermoelectric materials. The structure was identified to be triclinic with the space group P1 and cell parameters a = 5.43 ± 0.09 Å, b = 3.93 ± 0.03 Å, c = 3.75 ± 0.01 Å, α = 115.4 ± 0.2°, β = 93.4 ± 0.6° and γ = 91.1 ± 0.1°. The methodology is particularly beneficial for the class of problems where the phase under study coexists in a multiphase environment.

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Section: Introductionmentioning

confidence: 99%

Identification of the Bravais lattice and cell parameters through quantitative model-based transmission electron microscopy and Niggli cell reduction theory: the case of intermetallic Ni₅Pb₂Te₃

Kumar¹,

Ravishankar²,

Chattopadhay³

2023

J Appl Cryst

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show abstract

Notes and References

2022

Principles of Electron Optics, Volume 3

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Introduction

Cited by 2 publications

References 203 publications

Identification of the Bravais lattice and cell parameters through quantitative model-based transmission electron microscopy and Niggli cell reduction theory: the case of intermetallic Ni₅Pb₂Te₃

Identification of the Bravais lattice and cell parameters through quantitative model-based transmission electron microscopy and Niggli cell reduction theory: the case of intermetallic Ni₅Pb₂Te₃

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Introduction

Cited by 2 publications

References 203 publications

Identification of the Bravais lattice and cell parameters through quantitative model-based transmission electron microscopy and Niggli cell reduction theory: the case of intermetallic Ni5Pb2Te3

Identification of the Bravais lattice and cell parameters through quantitative model-based transmission electron microscopy and Niggli cell reduction theory: the case of intermetallic Ni5Pb2Te3

Notes and References

Contact Info

Product

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About

Identification of the Bravais lattice and cell parameters through quantitative model-based transmission electron microscopy and Niggli cell reduction theory: the case of intermetallic Ni₅Pb₂Te₃

Identification of the Bravais lattice and cell parameters through quantitative model-based transmission electron microscopy and Niggli cell reduction theory: the case of intermetallic Ni₅Pb₂Te₃