Novel Pressure-Induced Magnetic Transition in Magnetite (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>Fe</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:math>)

Ding, Yang; Haskel, D.; Овчинников, С. Г.; Tseng, Yuan-Chieh; Orlov, Yuri S.; Lang, J. C.; Mao, Ho‐kwang

doi:10.1103/physrevlett.100.045508

Cited by 93 publications

(77 citation statements)

References 38 publications

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“…HP RXES has been successfully used for quantitatively measuring the development of multiple electronic configurations with differing 4f occupation numbers, revealing information on the delocalization of the strongly correlated 4f electrons [248,249]. Intermediate spin state of Fe3O4 at 15-16 GPa has been identified by combining XMCD and RXES [56].…”

Section: Hp Resonant X-ray Emission Spectroscopy and Partial Fluorescmentioning

confidence: 99%

“…3). Bassett et al [53,54] drilled holes or grooves on the diamonds to reduce the optical path through them down to several hundred microns, thus greatly reducing the diamond absorption between 5 and 10 keV and enabling HP x-ray spectroscopy of transition element Kedges (e.g., Mn [55] and Fe [56]) and rare-earth element L-edges (e.g., Ce [57,58]). Perforated and partially perforated anvils have been commercially available and widely used for either reducing the diamond absorption [59] or minimizing the background scattering signals from the anvils [60,61].…”

Section: Anvilsmentioning

confidence: 99%

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High-pressure studies with x-rays using diamond anvil cells

2016

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Pressure profoundly alters all states of matter. The symbiotic development of ultrahighpressure diamond anvil cells, to compress samples to sustainable multi-megabar pressures; and synchrotron x-ray techniques, to probe materials' properties in situ, has enabled the exploration of rich high-pressure (HP) science. In this article, we first introduce the essential concept of diamond anvil cell technology, together with recent developments and its integration with other extreme environments. We then provide an overview of the latest developments in HP synchrotron techniques, their applications, and current problems, followed by a discussion of HP scientific studies using x-rays in the key multidisciplinary fields. These HP studies include: HP x-ray emission spectroscopy, which provides information on the filled electronic states of HP samples; HP x-ray Raman spectroscopy, which probes the HP chemical bonding changes of light elements; HP electronic inelastic x-ray scattering spectroscopy, which accesses high energy electronic phenomena, including electronic band structure, Fermi surface, excitons, plasmons, and their dispersions; HP resonant inelastic x-ray scattering spectroscopy, which probes shallow core excitations, multiplet structures, and spin-resolved electronic structure; HP nuclear resonant x-ray spectroscopy, which provides phonon densities of state and time-resolved Mössbauer information; HP x-ray imaging, which provides information on hierarchical structures, dynamic processes, and internal strains; HP x-ray diffraction, which determines the fundamental structures and densities of single-crystal, polycrystalline, nanocrystalline, and non-crystalline materials; and HP radial x-ray diffraction, which yields deviatoric, elastic and rheological information. Integrating these tools with hydrostatic or uniaxial pressure media, laser and resistive heating, and cryogenic cooling, has enabled investigations of the structural, vibrational, electronic, and magnetic properties of materials over a wide range of pressure-temperature conditions.

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Section: Hp Resonant X-ray Emission Spectroscopy and Partial Fluorescmentioning

confidence: 99%

Section: Anvilsmentioning

confidence: 99%

High-pressure studies with x-rays using diamond anvil cells

2016

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“…This high-pressure structure does not order magnetically at 300 K 7 and shows a semiconductorlike behavior. 9,10 Fe K-edge x-ray magnetic circular dichroism (XMCD) measurements [11][12][13] have been reported to give a comprehensive view of the magnetic behavior of magnetite with pressure. A pressure-induced magnetic transition shown by a sharp decrease (∼50%) in the amplitude of the XMCD signal was reported between 12 and 16 GPa by Ding et al (Ref.…”

Section: Introductionmentioning

confidence: 99%

Investigation of pressure-induced magnetic transitions in CoxFe3−xO4
Subı́as
¹
,
Cuartero
²
,
Garcı́a
³

et al. 2013
Phys. Rev. B
31
4
16
0
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“…68,117,122,[149][150][151][152][153][154][155][156][157][158] Among these studies, discovery of the pressure-induced ferromagnetic phase in Mn 3 GaC is noteworthy. 68,149) Most ferromagnetic systems will lose their magnetic order as the lattice volume contracts or the interatomic distance is reduced.…”

Section: Other Magnetic Systemsmentioning

confidence: 99%

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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Novel Pressure-Induced Magnetic Transition in Magnetite (Fe3O4)

Cited by 93 publications

References 38 publications

High-pressure studies with x-rays using diamond anvil cells

High-pressure studies with x-rays using diamond anvil cells

Investigation of pressure-induced magnetic transitions in CoxFe3−xO4
Subı́as
¹
,
Cuartero
²
,
Garcı́a
³

et al. 2013
Phys. Rev. B
31
4
16
0
View full text Add to dashboard Cite

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

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Novel Pressure-Induced Magnetic Transition in Magnetite (Fe3O4)

Cited by 93 publications

References 38 publications

High-pressure studies with x-rays using diamond anvil cells

High-pressure studies with x-rays using diamond anvil cells

Investigation of pressure-induced magnetic transitions in CoxFe3−xO4Subı́as1, Cuartero2, Garcı́a3 et al. 2013Phys. Rev. B314160View full textAdd to dashboardCite

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

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Product

Resources

About

Investigation of pressure-induced magnetic transitions in CoxFe3−xO4
Subı́as
¹
,
Cuartero
²
,
Garcı́a
³

et al. 2013
Phys. Rev. B
31
4
16
0
View full text Add to dashboard Cite