High-throughput XPS spectrum modeling with autonomous background subtraction for 3d5/2 peak mapping of SnS

T Matsumura, N Nagamura, S Akaho… - … and Technology of …, 2023 - Taylor & Francis
We propose a fitting model that automatically conducts the background subtraction during
high-throughput peak fitting. The fitting model consists of the pseudo-Voigt mixture model …

Bayesian inference on hamiltonian selections for mössbauer spectroscopy

R Moriguchi, S Tsutsui, S Katakami… - Journal of the Physical …, 2022 - journals.jps.jp
Mössbauer spectroscopy, which provides knowledge related to electronic states in
materials, has been applied to various fields such as condensed matter physics and material …

Quantifying physical insights cooperatively with exhaustive search for Bayesian spectroscopy of X-ray photoelectron spectra

H Kumazoe, K Iwamitsu, M Imamura, K Takahashi… - Scientific Reports, 2023 - nature.com
We analyzed the X-ray photoelectron spectra (XPS) of carbon 1s states in graphene and
oxygen-intercalated graphene grown on SiC (0001) using Bayesian spectroscopy. To …

Spectral Analysis of X‐Ray Absorption Near Edge Structure in α‐Fe2O3 Based on Bayesian Spectroscopy

K Iwamitsu, T Yokota, K Murata… - … status solidi (b), 2020 - Wiley Online Library
A Bayesian spectroscopy technique is proposed to decompose weak pre‐edge structures
from an X‐ray absorption near edge structure (XANES) spectrum. This methodology can …

Spectrum adapted expectation-conditional maximization algorithm for extending high–throughput peak separation method in XPS analysis

T Matsumura, N Nagamura, S Akaho… - … and Technology of …, 2021 - Taylor & Francis
We introduced the spectrum-adapted expectation-conditional maximization (ECM) algorithm
to improve the efficiency of the peak fitting of spectral data by various fitting models. The …

Non-negative matrix factorization for 2D-XAS images of lithium ion batteries

H Tanimoto, X Hongkun, M Mizumaki… - Journal of Physics …, 2021 - iopscience.iop.org
Lithium-ion secondary batteries have been used in a wide variety of purposes, such as for
powering mobile devices and electric vehicles, but their performance should be improved …

Spectral decomposition of components weaker than noise intensity by bayesian spectroscopy

K Iwamitsu, M Okada, I Akai - Journal of the Physical Society of …, 2020 - journals.jps.jp
Using Bayesian spectroscopy, we have performed model selection to extract weak spectral
components from an absorption spectrum of a Cu2O thin crystal sandwiched between a pair …

[HTML][HTML] Bayesian sparse modeling of extended x-ray absorption fine structure to determine interstitial oxygen positions in yttrium oxyhydride epitaxial thin film

H Kumazoe, Y Igarashi, F Iesari, R Shimizu… - AIP Advances, 2021 - pubs.aip.org
This article presents a Bayesian sparse modeling method to analyze extended x-ray
absorption fine structure (EXAFS) data with basis functions built on two-body signals. This …

Accelerating Bayesian Estimation of Solar Cell Equivalent Circuit Parameters Using JAX-Based Sampling

K Tada - Electronics, 2023 - mdpi.com
Equivalent circuit models that reproduce the current–voltage characteristics of solar cells are
useful not only to gain physical insight into the power loss mechanisms that take place in …

Bayesian spectroscopy of synthesized soft X-ray absorption spectra showing magnetic circular dichroism at the Ni-L3, -L2 edges

T Yamasaki, K Iwamitsu, H Kumazoe… - … and Technology of …, 2021 - Taylor & Francis
We proposed a data-driven science study by Bayesian spectroscopy to analyze an X-ray
magnetic circular dichroism (XMCD) spectrum and magnetic moments. In Bayesian …