Electron paramagnetic resonance of 6S ground-state ions in sodium ammonium sulphate dihydrate single crystal:

Kuriata, J.; Lipiński, I. E.; Korynevskii, N. A.; Bodziony, T.

doi:10.1016/s0921-4526(01)00961-9

Cited by 8 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Over the last few years we have extensively studied yet another representative of the crystal belonging to the same isomorphic group, namely, sodium ammonium sulphate dihydrate SASD [3,4]. Analysing both the experimental and theoretical results we found that the proposed in the literature model for phase transition should be revised.…”

Section: Discussionmentioning

confidence: 99%

“…we constructed a theoretical model (discussed extensively in [3,4]) in which SO 4 (I) (SeO 4 (I)) and SO 4 (II) (SeO 4 (II)) groups were assumed to form a cluster. Considering short-and long-range interactions between the clusters characterized by phenomenological parameters J andK respectively we were able to explain the existence of three anomalies for SASD.…”

Section: Figurementioning

confidence: 99%

See 1 more Smart Citation

Experimental and Theoretical Studies of SASeD Doped with Cr³⁺

2004

Self Cite

View full text Add to dashboard Cite

The results of optic and EPR measurements are presented. The transmition bands observed during optic measurements (above and below T c ) have been identified. It is shown that the phase transition, taking place at 180 K reflects itself only in a small parallel shift of the whole spectrum towards higher frequencies. Temperature dependence of the EPR spectrum reveals not only the transition at 176 K but two other anomalies detected at T 1 = 156 K and T 2 = 285 K. An outline of the theory predicting the existence of these anomalies is discussed in terms of the so-called cluster model.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Experimental and Theoretical Studies of SASeD Doped with Cr³⁺

2004

Self Cite

View full text Add to dashboard Cite

show abstract

“…Optical examination, EPR on doped and irradiated SASD and SASeD crystals imply that some nonlinear properties of these materials may be fundamental to their use in dosimeter devices. The following work is the continuation of theoretical dissertations, partially described in many earlier works [3][4][5].…”

Section: /[172]mentioning

confidence: 99%

Pressure Effect on the Anomal Behaviour of Physical Properties of NaNH₄SO₄· 2H₂O Type Crystals

2011

View full text Add to dashboard Cite

All experimentally observed anomalies in dielectric susceptibility, heat capacity, lattice dynamics behaviour for the isomorphic crystals SASD and SASeD were consistently interpreted upon modified-Mitsui model taken into account the dielectric and EPR results of subjected systems. We have found that the inclusion of short and long range correlations which takes place for two inequivalent active groups SO 4 (I) (SO 4 (II) and SeO 4 (I) (SeO 4 (II) modifies temperature behaviour of the spin-Hamiltonian D parameter and gives much better explanation of experimental results. Theoretical considerations were based on two-time Green functions method and the modified Mitsui model. The spectrum of bonded quasispin-phonon vibration has been analysed.

show abstract

“…However the effect of soft modes in the phase transition of SASeD has not been described so far. It is the aim of this paper to report how the effect of soft modes reflects in the temperature dependence of the EPR spectrum of SASeD doped with Cr 3+ and how the theory developed by us and described in [4] can be extended to include dipole interactions with the crystal lattice.…”

Section: Introductionmentioning

confidence: 99%

On a correlation between EPR data for SASeD doped with Cr^{3+} and soft modes

Lipiński¹,

Kuriata²,

Korynevskii³

2007

Condens. Matter Phys.

View full text Add to dashboard Cite

EPR experimental results obtained for SASeD doped with Cr 3+ are reported with special emphasis on those observations which reveal the effect of soft modes i.e. the temperature dependence of the D ZZ spinHamiltonian parameter and the temperature dependence of the EPR linewidth. An extension of the twosublattice model, previously developed and tested for SASD, to include lattice vibrations is presented. The obtained spectrum of bound excitations for the system investigated supports the idea that soft modes contribute to the phase transition at T C = 175 K. The anomaly detected at T 1 = 150 K has only a quasisoft mode character and the anomaly detected at T 2 = 280 K cannot be related to the effect of soft modes.

show abstract

Electron paramagnetic resonance of 6S ground-state ions in sodium ammonium sulphate dihydrate single crystal:

Cited by 8 publications

References 9 publications

Experimental and Theoretical Studies of SASeD Doped with Cr³⁺

Experimental and Theoretical Studies of SASeD Doped with Cr³⁺

Pressure Effect on the Anomal Behaviour of Physical Properties of NaNH₄SO₄· 2H₂O Type Crystals

On a correlation between EPR data for SASeD doped with Cr^{3+} and soft modes

Contact Info

Product

Resources

About

Electron paramagnetic resonance of 6S ground-state ions in sodium ammonium sulphate dihydrate single crystal:

Cited by 8 publications

References 9 publications

Experimental and Theoretical Studies of SASeD Doped with Cr3+

Experimental and Theoretical Studies of SASeD Doped with Cr3+

Pressure Effect on the Anomal Behaviour of Physical Properties of NaNH4SO4· 2H2O Type Crystals

On a correlation between EPR data for SASeD doped with Cr^{3+} and soft modes

Contact Info

Product

Resources

About

Experimental and Theoretical Studies of SASeD Doped with Cr³⁺

Experimental and Theoretical Studies of SASeD Doped with Cr³⁺

Pressure Effect on the Anomal Behaviour of Physical Properties of NaNH₄SO₄· 2H₂O Type Crystals