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Rigaku Journal (ISSN 2187-9974)

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Winter 2022, Volume 38, No. 1

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Winter 2022, Vol. 38, No. 1

Thank you very much for reading the “Rigaku Journal”

Hikaru Shimura

For the past 70 years, since the founding of our company in 1951, our management philosophy has been to “contribute to the enhancement of humanity through scientific and technological development.” By aligning ourselves with the enterprises and institutes pushing the boundaries of possibility over these seven decades, we have continuously expanded our portfolio of original technologies. These...

Breaking the 1-μm barrier with the electron diffractometer XtaLAB Synergy-ED

Sho Ito and Akihito Yamano

3D electron diffraction (3D ED)/Micro electron diffraction (MicroED) is a technique that can provide measurers with three-dimensional molecular structures from crystals of submicron order. However, 3D ED/Micro ED requires expertise in both electron microscopy and crystallography. Here, we introduce the newly developed electron diffractometer XtaLAB Synergy-ED specialized for 3D ED/MicroED experiments, its instrument...

Powder X-ray Diffraction Basic Course Fourth Installment: Qualitative analysis

Miki Kasari

An essential feature of the qualitative analysis of the powder X-ray diffraction (PXRD) method is that this provides information on the sample’s crystal structure, which often affects the properties and functions of the material. The qualitative analysis by the PXRD method is a phase identification method based on the matching of known...

Chemical State Analysis by X-ray Emission Spectroscopy

Hikari Takahara, Takashi Shoji and Yoshiaki Ito

X-ray emission spectroscopy (XES) is a chemical state analysis method. It is possible to show the change in a compound’s bonding state profile by measuring fluorescent X-rays with high energy resolution. Recently, the XES method has been evaluated in the field of advanced materials such as battery materials and catalysts, and the...

Wide-Angle X-ray Scattering Instrument NANOPIX-WE

In recent years, many countries have become increasingly concerned about environmental issues, and are accelerating their efforts to reduce their environmental impact by reducing dependence on fossil fuels (coal and oil) to achieve the carbon neutral. Developed countries and manufacturers are creating social policies and manufacturing strategies for low environmental load. Thus, the demand for advanced polymer materials...

Summer 2021, Volume 37, No. 2

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Summer 2021, Vol.37, No.2

Utilization of X-ray diffraction data in machine-learning based material exploration for all-solid-state lithium batteries

Kota Suzuki, Masaaki Hirayama, and Ryoji Kanno

Lithium-ion batteries are secondary (rechargeable) batteries that are used for a wide range of applications, from mobile devices to electric vehicles, as they combine both high energy density and excellent power characteristics. In recent years, research has been conducted toward the realization of an all-solid-state lithium battery, in which the...

Standardless FP XRF analysis for lithium ion battery electrode materials

Hikari Takahara and Hironori Kobayashi

Standardless FP X-ray fluorescence analysis is a quantification method using theoretical calculations including fundamental parameters. The analysis method has been widely used in the electronics and petrochemical industries, among others, since it can simply and quickly quantify sample compositions from spectral peak intensities without preparing calibration curves. In this report, the standardless FP...

X-ray analysis of a magnesium alloy expected to be a useful lightweight material

Akimitsu Nezu, Wataru Matsuda, and Junichi Sato

Weight saving is an important challenge for various industries, including transportation (automotive, aeronautical, or bullet-train manufacturing), electronic devices, and intelligent robotics. Finding lighter-weight materials is, therefore, a popular research subject because of its potential impact on peoples’ daily life. This is especially true in the modern automotive industry, where better...

Powder X-ray Diffraction Basic Course | Third Installment: Sample preparation and measurement conditions to obtain high-quality data

Masashi Omori

In the second installment of the powder X-ray diffraction (PXRD) basic course, how to select instrument configurations to obtain high-quality data was described. This third installment provides information on how to prepare samples and determine the best measurement conditions to obtain high-quality data. Regarding sample preparations, the type of sample...

Machine learning and application to spectral analysis on TXRF spectrometry

Makoto Doi and Shinya Kikuta

Total Reflection X-ray Fluorescence (TXRF) analysis is a non-destructive and surface-sensitive analysis method using X-rays, in which incident X-rays are irradiated on a sample at an extremely low grazing angle (about 0.1°) and the fluorescent X-rays from the sample generated by the incident X-rays are measured with extremely low background...

Non-destructive characterization of crystallographic defects of SiC substrates using X-ray topography for R&D and quality assurance in production

Christian Reimann and Christian Kranert

One of the major technical challenges of this decade are energy efficient technologies, which is among others, comparable in its importance to Artificial Intelligence, 5G and IoT. Innovative silicon carbide (SiC) technology and components will contribute significantly towards the goal of a greener, energy efficient and sustainable economy. SiC also...

Dynamic DSC Software —Temperature-Modulated DSC—

Differential scanning calorimetry (DSC) is a thermal analysis technique that measures the change in heat capacity of a sample, or endothermic/exothermic reactions, based on the difference in temperature between a sample and a reference material that are both heated/ cooled at a predetermined constant rate. This technique is widely used...

Hand-held LIBS with High-Resolution Echelle Spectrometer Rigaku KT-500

Rapid Analysis of Carbon in Steel and High Performance Analysis of Stainless and High Temperature Alloys

The Rigaku KT-500 hand-held analyzer represents the next advancement in handheld laser induced breakdown spectroscopy (LIBS).

Building on the capability of the KT-100 Series analyzer, the KT-500 adds High Resolution Echelle Spectrometer (HiRES) technology for rapid...