Cinnabar phase in ZnSe at high pressure

Pellicer‐Porres, J.; Segura, A.; Muñoz, V.; Zúñiga, Javier; Itié, Jean‐Paul; Polian, A.; Munsch, P.

doi:10.1103/physrevb.65.012109

Cited by 38 publications

(28 citation statements)

References 21 publications

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“…We have already begun this type of experiments. [22][23][24] b CE depends on the inherent properties of B and C. X-ray-absorption fine-structure ͑XAFS͒ is sensitive to the local environment of the absorba)…”

Section: Introductionmentioning

confidence: 99%

X-ray-absorption fine-structure study of ZnSexTe1−x alloys

Pellicer‐Porres¹,

Polian²,

Segura

et al. 2004

Journal of Applied Physics

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X-ray-absorption fine-structure experiments at different temperatures in ZnSe x Te 1−x (x = 0, 0.1, 0.2, 0.55, 0.81, 0.93, 0.99, and 1.0) have been performed in order to obtain information about the structural relaxation and disorder effects occurring in the alloys. First and second neighbor distance distributions have been characterized at the Se and Zn K edges, using multiple-edge and multiple-scattering data analysis. The first neighbor distance distribution was found to be bimodal. The static disorder associated with the Zn-Te distance variance did not depend appreciably on composition. On the other hand, the static disorder associated with the Zn-Se distance increased as the Se content diminished. Using the bonding angle information provided by our experiments the point of view of the anion has been related to that of the cation. The resulting structural model indicates that Zn tetrahedra surrounding the anions remain essentially undistorted, but forced to tilt from their ideal zincblende orientation to accommodate the minority element. The main origin of structural disorder is suggested.

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Section: Introductionmentioning

confidence: 99%

X-ray-absorption fine-structure study of ZnSexTe1−x alloys

Pellicer‐Porres¹,

Polian²,

Segura

et al. 2004

Journal of Applied Physics

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“…However, an abnormal "jump" found in one of the thermopower cycles (Fig. 4, inset) can be potentially related to a formation of a small fraction of the cinnabar phase of a p-type of conductivity and therefore of the four-fold coordination, as proposed earlier [28].…”

Section: Zinc Selenidementioning

confidence: 91%

“…In the case of ZnSe, an additional phase was experimentally detected between the NaCl and ZB ones [27]. In one of the decompression runs probably the same phase was trapped and then identified with the cinnabar lattice [28]. However, theoretical calculations are inconsistent; some studies showed the stable cinnabar lattice in ZnSe [29], whereas some others reported its instability in respect of the SC16 (simple cubic with 16-atom basis) and NaCl lattices [30,31].…”

Section: Zinc Selenidementioning

confidence: 97%

“…Taking into account semiconducting properties of the cinnabar phases [38] and the fact that, in the case of ZnTe, the cinnabar phase has been detected by a similar "stair" in the pressure dependence of the electrical resistance [39], we can address these two features, near ~11 GPa and ~6 GPa (Fig. 4) to the transformations to the cinnabar and the ZB lattices, respectively [28]. Therefore, a similar "stair" on the pressurization curve of the sample #1 (Fig.…”

Section: Zinc Selenidementioning

confidence: 99%

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Electronic properties and phase transitions in Si, ZnSe, and GaAs under pressure cycling up to 20–30 GPa in a high‐pressure cell

Ovsyannikov

Shchennikov

Misiuk

et al. 2009

Physica Status Solidi (b)

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For a single network switch allocating link bandwidth to connections of a single class, an optimal call admission control (CAC) policy is found by the solution of a linear programming (LP) problem. Our optimization differs from previous work in that we include the effect of an output buffer in the switch for the temporary storage of packets bound for transmittal across the link. We find a policy that is optimal in the sense of minimizing call blocking subject to a packet level quality of service (QoS) requirement that limits the packet loss ratio. Such a policy's call blocking probability, if it is small enough to satisfy a call level QoS requirement, then establishes the feasibility of satisfying both the packet and call level QoS requirements for a given call request rate. We show with a previously described example that the addition of even a small output buffer can significantly increase the range of call request rates for which there exists a feasible policy, i.e. one that satisfies both QoS requirements. Also presented is an upper bound, valid for any fixed buffer size, on the range of call request rates for which there exists a feasible CAC policy. Copyright © 2003 John Wiley & Sons, Ltd.

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“…Theoretical investigations on the stability of cinnabar phase have been reported by Cote et al [16] and Qteish and co-workers [17][18][19]. Pellicers-Porres et al [20] have identified a new phase in ZnSe under high pressure employing the EDXRD technique. Pair distribution functions from high-resolution neutron diffraction data of ZnSe and ZnTe have been reported by Peterson and co-workers [6].…”

Section: Introductionmentioning

confidence: 96%

Compton scattering study of ZnSe

Vyas

Purvia

Sharma

et al. 2006

Physica Status Solidi (b)

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In this work we report on the Compton scattering study of ZnSe. The Am 241 Compton spectrometer, which uses 59.54 keV gamma rays, has been used for the measurements. The data has been compared with the ionic model based calculations for various Zn +x Se -x configurations (x varying from 0 to 2) and also with the Compton profiles computed from the local and non-local empirical pseudopotential methods. Although, the agreement is better with the local empirical pseudopotential calculation compared to the non-local method, the best agreement has been found with the ionic model for Zn +2 Se-2 configuration suggesting that the bonding in this compound is mainly ionic in nature.

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Cinnabar phase in ZnSe at high pressure

Cited by 38 publications

References 21 publications

X-ray-absorption fine-structure study of ZnSexTe1−x alloys

X-ray-absorption fine-structure study of ZnSexTe1−x alloys

Electronic properties and phase transitions in Si, ZnSe, and GaAs under pressure cycling up to 20–30 GPa in a high‐pressure cell

Compton scattering study of ZnSe

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