FS-PE

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2017-12-08
09:33
[PUBDB-2017-12965] Journal Article
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Kinetic alteration of the $6Mg(NH_{2} )_{2}–9LiH–LiBH_{4}$ system by co-adding $YCl_{3}$ and $Li_{3}N$
ddc:540
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2017-12-07
19:34
[PUBDB-2017-12923] Journal Article
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Field-free deterministic ultrafast creation of magnetic skyrmions by spin–orbit torques
ddc:600
Magnetic skyrmions are stabilized by a combination of external magnetic fields, stray field energies, higher-order exchange interactions and the Dzyaloshinskii–Moriya interaction (DMI). The last favours homochiral skyrmions, whose motion is driven by spin–orbit torques and is deterministic, which makes systems with a large DMI relevant for applications. [...]

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2017-12-07
17:48
OpenAccess [PUBDB-2017-12919] Journal Article
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Surface, final state, and spin effects in the valence-band photoemission spectra of LaCoO$_{3}$ (001)
ddc:530
The electronic structure of a LaCoO$_{3}$(001) perovskite is analyzed using simulated and measured angle-resolved valence-band photoemission spectroscopy data with emphasis on the effects of the surface truncation, the final state effects, and the spin degeneracy removal. Supercell simulations reveal instability towards the formation of nonuniform spin polarization in the Co-containing layers under tensile stress [...]
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2017-12-07
15:02
[PUBDB-2017-12903] Journal Article
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Structural, magnetic and electronic properties of pulsed-laser-deposition grown $SrFeO_{3−\delta}$ thin films and $SrFeO_{3−\delta}/La_{2/3}Ca_{1/3}MnO_{3}$ multilayers
ddc:530
We studied the structural, magnetic and electronic properties of $SrFeO_{3-\delta}$ (SFO) thin films and $SrFeO_{3−\delta}/La_{2/3}Ca_{1/3}MnO_3$ (LCMO) superlattices that have been grown with pulsed laser deposition (PLD) on $La_{0.3}Sr_{0.7}Al_{0.65}Ta_{0.35}O_3$ (LSAT) substrates. X-ray reflectometry and scanning transmission electron microscopy (STEM) confirm the high structural quality of the films and flat and atomically sharp interfaces of the superlattices. [...]
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2017-12-07
14:20
[PUBDB-2017-12886] Journal Article
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Structural transitions in iron-based Ba$_{3}$NbFe$_{3}$Si$_{2}$O$_{14}$ langasite at high pressures
epl 116(6), 66003 (2016) [10.1209/0295-5075/116/66003]  GO
ddc:530
Synchrotron X-ray diffraction studies of the structural characteristics of Ba$_{3}$NbFe$_{3}$Si$_{2}$O$_{14}$ langasite were performed at high hydrostatic pressures (up to 60 GPa) created in a diamond anvil cell. The Mössbauer absorption spectra of $^{57}$Fe nuclei and optical absorption spectra were recorded at pressures up to 10 and 54 GPa, respectively [...]
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2017-12-07
14:17
OpenAccess [PUBDB-2017-12884] Journal Article
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High-pressure magnetic, electronic, and structural properties of $MFe_{2}O_{4}$ (M = Mg, Zn, Fe) ferric spinels
ddc:530
Magnetic, electronic, and structural properties of $MFe_{2}O_{4}$ (M=Mg,Zn,Fe) ferric spinels have been studied by $^{57}$Fe Mössbauer spectroscopy, electrical conductivity, and powder and single-crystal x-ray diffraction (XRD) to a pressure of 120 GPa and in the 2.4–300 K temperature range. These studies reveal for all materials, at the pressure range 25–40 GPa, an irreversible first-order structural transition to the postspinel $CaTi_{2}O_4$− type structure (Bbmm) in which the HS Fe$^{3+}$ occupies two different crystallographic sites characterized by six- and eightfold coordination polyhedra, respectively [...]
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2017-12-07
14:10
OpenAccess [PUBDB-2017-12880] Journal Article
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Ambient-temperature high-pressure-induced ferroelectric phase transition in $CaMnTi_{2}O_{6}$
ddc:530
The ferroelectric to paraelectric phase transition of multiferroic $CaMnTi_{2}O_{6}$ has been investigated at high pressures and ambient temperature by second-harmonic generation (SHG), Raman spectroscopy, and powder and single-crystal x-ray diffraction. We have found that $CaMnTi_{2}O_{6}$ undergoes a pressure-induced structural phase transition (P4$_2$mc → P4$_2$/nmc) at ∼7 GPa to the same paraelectric structure found at ambient pressure and T$_c$=630K [...]
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2017-12-07
13:20
[PUBDB-2017-12843] Journal Article
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Insights into formation and stability of τ-MnAlZx (Z = C and B)
ddc:670
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2017-12-07
11:00
[PUBDB-2017-12827] Journal Article
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Temperature-dependent synchrotron X-ray diffraction, pair distribution function and susceptibility study on the layered compound $CrTe_{3}$
ddc:540
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2017-12-05
15:36
OpenAccess [PUBDB-2017-12763] Journal Article
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Nonicosahedral boron allotrope synthesized at high pressure and high temperature
ddc:530
Theoretical predictions of pressure-induced phase transformations often become long-standing enigmasbecause of limitations of contemporary available experimental possibilities. Hitherto the existence of anonicosahedral boron allotrope has been one of them. [...]
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