Local structural deformation in [Zn(1-propyltetrazole)6](BF4)2 and [Fe(1-propyltetrazole)6](BF4)2 crystals observed by positron-annihilation spectroscopy

Yasuyoshi Nagai, Haruo Saito, Toshio Hyodo, A. Vértes, K. Süvegh

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Abstract

The two-dimensional angular correlation spectra of 2γ annihilation radiation (2D-ACAR) from single crystals of [Zn(1-propyltetrazole)6](BF4)2 at 30, 150, and 290 K and [Fe(1-propyltetrazole)6](BF4)2 at 150 and 290 K have been measured. A structural deformation in [Zn(1-propyltetrazole)6](BF4)2 has been observed through the change of the momentum distribution of the positronium. The similarity of the anisotropies of the 2D-ACAR spectra for [Zn(1-propyltetrazole)6](BF4)2 and [Fe(1-propyltetrazole)6](BF4)2 in the rhombohedral structure indicates that a similar structural deformation also takes place in [Fe(1-propyltetrazole)6](BF4)2. This deformation can be the trigger of the spin-crossover transition.

Original languageEnglish
Pages (from-to)14119-14122
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume57
Issue number22
Publication statusPublished - Jun 1 1998

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Positron annihilation spectroscopy
positron annihilation
Crystals
spectroscopy
crystals
positronium
angular correlation
crossovers
Momentum
Anisotropy
actuators
Single crystals
momentum
Radiation
anisotropy
single crystals
radiation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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title = "Local structural deformation in [Zn(1-propyltetrazole)6](BF4)2 and [Fe(1-propyltetrazole)6](BF4)2 crystals observed by positron-annihilation spectroscopy",
abstract = "The two-dimensional angular correlation spectra of 2γ annihilation radiation (2D-ACAR) from single crystals of [Zn(1-propyltetrazole)6](BF4)2 at 30, 150, and 290 K and [Fe(1-propyltetrazole)6](BF4)2 at 150 and 290 K have been measured. A structural deformation in [Zn(1-propyltetrazole)6](BF4)2 has been observed through the change of the momentum distribution of the positronium. The similarity of the anisotropies of the 2D-ACAR spectra for [Zn(1-propyltetrazole)6](BF4)2 and [Fe(1-propyltetrazole)6](BF4)2 in the rhombohedral structure indicates that a similar structural deformation also takes place in [Fe(1-propyltetrazole)6](BF4)2. This deformation can be the trigger of the spin-crossover transition.",
author = "Yasuyoshi Nagai and Haruo Saito and Toshio Hyodo and A. V{\'e}rtes and K. S{\"u}vegh",
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journal = "Physical Review B-Condensed Matter",
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T1 - Local structural deformation in [Zn(1-propyltetrazole)6](BF4)2 and [Fe(1-propyltetrazole)6](BF4)2 crystals observed by positron-annihilation spectroscopy

AU - Nagai, Yasuyoshi

AU - Saito, Haruo

AU - Hyodo, Toshio

AU - Vértes, A.

AU - Süvegh, K.

PY - 1998/6/1

Y1 - 1998/6/1

N2 - The two-dimensional angular correlation spectra of 2γ annihilation radiation (2D-ACAR) from single crystals of [Zn(1-propyltetrazole)6](BF4)2 at 30, 150, and 290 K and [Fe(1-propyltetrazole)6](BF4)2 at 150 and 290 K have been measured. A structural deformation in [Zn(1-propyltetrazole)6](BF4)2 has been observed through the change of the momentum distribution of the positronium. The similarity of the anisotropies of the 2D-ACAR spectra for [Zn(1-propyltetrazole)6](BF4)2 and [Fe(1-propyltetrazole)6](BF4)2 in the rhombohedral structure indicates that a similar structural deformation also takes place in [Fe(1-propyltetrazole)6](BF4)2. This deformation can be the trigger of the spin-crossover transition.

AB - The two-dimensional angular correlation spectra of 2γ annihilation radiation (2D-ACAR) from single crystals of [Zn(1-propyltetrazole)6](BF4)2 at 30, 150, and 290 K and [Fe(1-propyltetrazole)6](BF4)2 at 150 and 290 K have been measured. A structural deformation in [Zn(1-propyltetrazole)6](BF4)2 has been observed through the change of the momentum distribution of the positronium. The similarity of the anisotropies of the 2D-ACAR spectra for [Zn(1-propyltetrazole)6](BF4)2 and [Fe(1-propyltetrazole)6](BF4)2 in the rhombohedral structure indicates that a similar structural deformation also takes place in [Fe(1-propyltetrazole)6](BF4)2. This deformation can be the trigger of the spin-crossover transition.

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