Electron Spin Relaxation and ESEEM Spectroscopy of the Glycine Radical in Diglycine Nitrate Single Crystal.

Gramza, M.; Hilczer, W.; Goslar, J.; Hoffmann, S. K.; Jeevarajan, A. S.; Jeevarajan, Judith A.; Hand, Elli S.; Roos, Björn O.; Vallance, Claire; Wood, Bryan R.

doi:10.3891/acta.chem.scand.51-0556

Cited by 16 publications

(15 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An origin of the angular and m, dependences is not clear. Similar variations were observed also for Cu" complexes [21] and for radicals in solids [22][23][24].…”

Section: Orientation and M Dependence Of The Phase Memory Timesupporting

confidence: 82%

Electron spin relaxation of copper(II) ions in diamagnetic crystals

Hoffmann

Goslar

1998

Appl. Magn. Reson.

Self Cite

View full text Add to dashboard Cite

The electron spin-lattice and spin-spin phase relaxation measurements of Cu" ions in various crystals are reviewed and discussed. Examples of the Debye temperature determination from a wide temperature range measurements of the spin-lattice relaxation time T, are shown. An influence of the Jahn-Teller dynamics on T, is presented. The phase relaxation described by the phase memory time TM is affected by temperature due to the spin packet width modulation by molecular motions. The TM is anisotropic in crystals and can be different for different hyperfine lines of an EPR spectrum.

show abstract

“…An origin of the angular and m, dependences is not clear. Similar variations were observed also for Cu" complexes [21] and for radicals in solids [22][23][24].…”

Section: Orientation and M Dependence Of The Phase Memory Timesupporting

confidence: 82%

Electron spin relaxation of copper(II) ions in diamagnetic crystals

Hoffmann

Goslar

1998

Appl. Magn. Reson.

Self Cite

View full text Add to dashboard Cite

show abstract

“…It produces a maximum in the temperature dependence of 1/T M (Fig. 7b), as was observed for rotating CH 3 groups in nitroxide molecules (44) and NH 3 groups in crystals (45)(46)(47).…”

Section: Temperature Dependence Of the Dephasing Ratesupporting

confidence: 67%

Electron Spin Relaxation in Pseudo-Jahn–Teller Low-Symmetry Cu(II) Complexes in Diaqua(L-Aspartate)Zn(II)·H2O Crystals

Hoffmann

Hilczer

Goslar

et al. 2001

Journal of Magnetic Resonance

View full text Add to dashboard Cite

“…It means that the distribution of the spin-lattice relaxation times is not affected by temperature in the crystal although an increase in β-value was observed for a-Si:H [25]. We observed the temperature independent distribution of spin-lattice relaxation times with ,Q = 0.70 for glycine radical produced by y-irradiation in diglycine nitrate crystal [26]. It seems that distribution of relaxation times is characteristic of free radicals produced by radiation damage of crystals, where the neighbourhood of radicals varies from site to site and their space distribution is nonuniform.…”

Section: Spin-lattice Relaxationmentioning

confidence: 63%

ESR and Electron Spin Echo Studies of Spin-Lattice Relaxation of Hydrazinium Radical in Li(N₂H₅)O₄Single Crystal

et al. 1997

Self Cite

View full text Add to dashboard Cite

A hydrazinium NH-NH3 radical was identified by ESR in 7-irradiated Li(N2H5)SO4 single crystal. Unpaired electron is strongly localized on the nitrogen atom as compared to hydrazinium radicals in other crystals. Angular variations of the multicomponent ESR spectra and computer calculations gave the isotropic hyperfine coupling parameters (in mT): αN1 = 1.93, α N 2 = 0 . 8 0 , a 1 1 1 = 2 . 5 0 , an y = 0 . 4 8 ( N H 3 ) , a n d a 1 1 2 = 1 . 4 0 ( a d j a c e n t molecule). The radiation defects containing unpaired electrons do not influence much the protonic conductivity along the hydrazine molecule chains in the crystal. It confirms a tunelling mechanism of the conductivity activated by NH2-group rotation. Spin-lattice relaxation time T1 varies strongly with temperature in the range from 100 ms (10 K) to 90 is (170 K) and is governed by spectral diffusion (1T1 oc T2 ) and a Murphy-type mechanism (1/T1 oc cosech(Δ /T)) with d = 150 cm -1 . A distribution of the spin-relaxation times was observed with temperature independent dispersion parameter ,Q = 0.76.

show abstract

Electron Spin Relaxation and ESEEM Spectroscopy of the Glycine Radical in Diglycine Nitrate Single Crystal.

Cited by 16 publications

References 0 publications

Electron spin relaxation of copper(II) ions in diamagnetic crystals

Electron spin relaxation of copper(II) ions in diamagnetic crystals

Electron Spin Relaxation in Pseudo-Jahn–Teller Low-Symmetry Cu(II) Complexes in Diaqua(L-Aspartate)Zn(II)·H2O Crystals

ESR and Electron Spin Echo Studies of Spin-Lattice Relaxation of Hydrazinium Radical in Li(N₂H₅)O₄Single Crystal

Contact Info

Product

Resources

About

Electron Spin Relaxation and ESEEM Spectroscopy of the Glycine Radical in Diglycine Nitrate Single Crystal.

Cited by 16 publications

References 0 publications

Electron spin relaxation of copper(II) ions in diamagnetic crystals

Electron spin relaxation of copper(II) ions in diamagnetic crystals

Electron Spin Relaxation in Pseudo-Jahn–Teller Low-Symmetry Cu(II) Complexes in Diaqua(L-Aspartate)Zn(II)·H2O Crystals

ESR and Electron Spin Echo Studies of Spin-Lattice Relaxation of Hydrazinium Radical in Li(N2H5)O4Single Crystal

Contact Info

Product

Resources

About

ESR and Electron Spin Echo Studies of Spin-Lattice Relaxation of Hydrazinium Radical in Li(N₂H₅)O₄Single Crystal