A hard X-ray nanospectroscopy station at SPring-8 BL39XU

Suzuki, Motohiro; Kawamura, N.; Mizumaki, Masaichiro; Terada, Yasuko; Uruga, Tomoya; Fujiwara, Akihiko; Yamazaki, Hiroshi; Yumoto, Hirokatsu; Koyama, Takahisa; Senba, Yasunori; Takeuchi, Tomoyuki; Ohashi, Haruhiko; Nariyama, Nobuteru; Takeshita, Kunikazu; Kimura, Hiroaki; Matsushita, Teruo; Furukawa, Yukito; Ohata, T.; Kondo, Y.; Ariake, J.; Richter, Jan; Fons, Paul; Sekizawa, Oki; Ishiguro, Nozomu; Tada, Mizuki; Goto, Shunji; Yamamoto, Masaki; Takata, Masaki; Ishikawa, Tetsuya

doi:10.1088/1742-6596/430/1/012017

Cited by 28 publications

(19 citation statements)

References 4 publications

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“…The routine using a nanoprobe has already been applied for advanced applications such as nano-XAFS of a single catalyst particle and local XMCD of a single magnetic dot [9]. The developed beamline components will enable rapid construction of further beamlines for nano-analysis.…”

Section: Resultsmentioning

confidence: 99%

Stable delivery of nano-beams for advanced nano-scale analyses

Ohashi

Yamazaki

Yumoto

et al. 2013

J. Phys.: Conf. Ser.

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Section: Resultsmentioning

confidence: 99%

Stable delivery of nano-beams for advanced nano-scale analyses

Ohashi

Yamazaki

Yumoto

et al. 2013

J. Phys.: Conf. Ser.

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“…The XFH experiment was performed at BL39XU in SPring-8. The beamline achieves a well-focused beam with a high beam intensity stability 21) , which enables us to obtain high-quality holograms from the small-sized sample. The experimental set up is illustrated in Fig.…”

Section: Methodsmentioning

confidence: 99%

In-Plane Positional Fluctuations of Zinc Atoms in Single Crystal Mg85Zn6Y9 Alloy Studied by X-ray Fluorescence Holography

et al. 2017

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We performed X-ray uorescence holography measurements on a single crystal Mg 85 Zn 6 Y 9 alloy, having a synchronized 18R long period stacking ordered structure, and successfully obtained Zn Kα holograms. The reconstruction shows U -shaped atomic images in remarkable contrast to the prediction of an existing model with Zn 6 Y 8 L1 2 clusters. To explain this feature we calculated holograms using a model with positional uctuations, and t the reconstruction to the experimental results. It was found that large rotational uctuations of the clusters can explain the U -shaped images.

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“…The same concept has been brought to the hard-X-ray beamlines at different facilities. [163][164][165][166][167] The XMCD microprobe technique has the following useful features, which other electron-or magneto-inductive techniques do not offer: i) element-specificity, ii) bulk sensitivity, iii) high sensitivity and quantitative ability, and iv) compatibility with high magnetic fields (&1 T). With these capabilities, the hard-X-ray MCD microprobe allows characteristic measurements of: a) element-specific magnetic imaging under a magnetic field, b) element-specific magnetization curves in a local area, and c) magnetic imaging of buried magnetic layers.…”

Section: Other Magnetic Systemsmentioning

confidence: 99%

“…This capability has been used to directly evaluate the magnetic properties of bit-patterned media. 167,168,[171][172][173] Bit-patterned media 174) was proposed as a new scheme for recording information on magnetic media with ultra-high density data storage. Recording on isolated magnetic dots of perpendicular anisotropy would greatly improve the thermal stability and could reduce the reading noise compared to the continuous granular media presently in practical use.…”

Section: Micro Xmcd Magnetometry In Bit-patterned Mediamentioning

confidence: 99%

“…173) In 2011, the XMCD microprobe at SPring-8 BL39XU was upgraded with the reduction in the focused beam size to 100 nm. 167) Using the improved focusing capability, the magnetization reversal process of an individual CoPt magnetic dot with a diameter of 200 nm has been directly observed by local ESMH measurements. This hard-X-ray MCD microprobe has demonstrated the rapid switching of the dot magnetization occurring within a field width of 3 mT.…”

Section: Micro Xmcd Magnetometry In Bit-patterned Mediamentioning

confidence: 99%

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Recent Progress of the X-ray Magnetic Circular Dichroism Technique for Element-Specific Magnetic Analysis

Nakamura

Suzuki

2013

J. Phys. Soc. Jpn.

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Recent trend of the X-ray magnetic circular dichroism (XMCD) spectroscopy-based technique and the related scientific topics at SPring-8 are reviewed. At the third-generation synchrotron radiation facility, the key developments in the XMCD technique include i) significant improvements in the accuracy and sensitivity of XMCD measurements with a quick helicity switching of circularly polarized X-rays, ii) introduction of extreme conditions (strong pulsed magnetic field and high pressures), and iii) new experimental setup using the high-brilliance X-ray source (microfocusing, reflection geometry, and high-pressure cells). These achievements have effectively extended the capability of the XMCD technique, a unique magnetic probe with an element-specificity, providing fundamental scientific insights in spintronics and magnetic recording devices, magnetic nanoparticles, and magnetism under high-magnetic field and high pressures.KEYWORDS: X-ray magnetic circular dichroism, element specific magnetic hysteresis, synchrotron radiation X-rays Historical ReviewElement-specific magnetic measurements are widely recognized as a powerful experimental technique for the study of magnetic materials and have previously been exploited mainly by Mössbauer spectroscopy. For the last 30 years, an energy-tunable and polarized X-ray source at synchrotron radiation facilities has given rather expansive possibilities of element-specific magnetic measurements using X-ray spectroscopy. Indeed, X-ray magnetic circular dichroism (XMCD) spectroscopy 1,2) has become one of the leading techniques for element-specific magnetic measurement using a resonant effect in the core-shell absorption with circularly polarized X-ray photons.The XMCD effect was first observed at the Fe K edge in the hard-X-ray region in 1987 by Schütz et al.3) In their experiment, an XMCD spectrum of pure iron was obtained by reversing the direction of magnetic fields applied to a sample, and the circularly polarized X-rays were provided by the off-orbital radiation from a bending magnet (off-plane method).3) The recorded XMCD signal was quite small, of the order of ÁI=I $ 5 Â 10 À3 . Subsequently, XMCD spectra at the L 2;3 edges of rare-earth elements [4][5][6] and at the L 2;3 edges of 5d metals in some alloys with 3d transition metals were also reported. 7) XMCD measurements over a wide energy range that is similar to the extended X-ray absorption fine structure (EXAFS), called magnetic EXAFS, in Fe and Gd 3 Fe 5 O 12 showed a capability of analyses of local magnetic structures using dichroic effects. 8,9) In the soft-X-ray region, the first XMCD spectrum at the Ni L 2;3 edges in a Ni single crystal was reported by Chen et al. in 1990. 10) The circularly polarized soft X-rays were obtained by the off-plain method, similar to the previous XMCD measurement at the Fe K edge.3) The intensity of the observed XMCD signal was about 8% with respect to the resonant absorption, the so called white line, and was much larger than that recorded at the K edge. The strong XMCD value at the...

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A hard X-ray nanospectroscopy station at SPring-8 BL39XU

Cited by 28 publications

References 4 publications

Stable delivery of nano-beams for advanced nano-scale analyses

Stable delivery of nano-beams for advanced nano-scale analyses

In-Plane Positional Fluctuations of Zinc Atoms in Single Crystal Mg<sub>85</sub>Zn<sub>6</sub>Y<sub>9</sub> Alloy Studied by X-ray Fluorescence Holography

Recent Progress of the X-ray Magnetic Circular Dichroism Technique for Element-Specific Magnetic Analysis

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