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Rigaku Journal (ISSN 2187-9974)

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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...

Winter 2021, Volume 37, No. 1

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Winter 2021, Vol.37, No.1

Visualization of fabric fluffiness and dryness —Evaluation of laundry detergents using X-ray computed tomography—

Yukari Sekine

For manufacturers who market a wide range of products, including household products, pharmaceuticals and/or nutraceutical products, it is important to communicate the characteristics of their products to consumers. This often requires a good evaluation technique that can show the product characteristics intuitively. X-ray imaging techniques, which can visualize the internal...

The “Molecular Grabber” method: Development of new crystalline sponge method New Idea for structural analysis of compounds using protein

Takashi Matsumoto, Akihito Yamano, Ryosuke Nakashima and Kunihiko Nishino

Molecular structure determination is very useful for the development of medicines, aroma chemicals and agrochemicals. Single crystal X-ray diffraction (SC-XRD) analysis is the most powerful technique for molecular structure determination. However, SC-XRD analysis requires good quality crystals. In fact, the biggest hurdle for SC-XRD analysis is crystallization.  Crystallization trials require...

Powder X-ray Diffraction Basic Course Second installment: Selection of equipment configuration to obtain high-quality data

Masashi Omori

It is necessary to obtain high-quality data for highly accurate analysis. The characteristics of high-quality data may be high intensity, high resolution, high P/B (peak-to-background ratio), and high S/N (signal-to-noise ratio). Deciding which features are important depends on the purpose of analysis. Therefore, we need to consider measurement conditions after...

X-ray fluorescence analysis of halogen elements

Wataru Matsuda

Halogen elements correspond to Group 17 in the periodic table and include fluorine (F), chlorine (Cl), bromine (Br) and iodine (I). Materials and products containing halogens are widely used in our daily life. For example, fluorine is contained in Teflon® resin and toothpaste, chlorine is contained in salt and vinyl...

High-resolution receiving optics for SmartLab X-ray diffraction system with a Hybrid Pixel Array Multi-Dimensional Detector (HyPix): HyRES220, HyRES400

Diffraction-based characterization of epitaxial thin films, such as the measurement of the composition, strain, and lattice constants, requires complicated alignment processes of the X-ray optics. Rigaku’s multipurpose X-ray diffractometer, “SmartLab,” features an automatic alignment function, which greatly simplifies the process. However, it still requires a timeconsuming re-alignment process when, for...

OIL-MULTI-PAK for multi-elements analysis of oils using pre-calibration package

X-ray fluorescence (XRF) spectrometry allows both simple sample preparation and high precision analysis.  The method is highly popular among various fields, including quality control and research & development.  Recent advanced data processing techniques and higher instrument sensitivities have improved analytical accuracies in “standardless FP analysis” using Fundamental Parameter (FP) method...