Spin-lattice relaxation time of Yb3+ in YbCl3·6H2O

Misra, Sushil K.; Orhun, Ufuk

doi:10.1016/0038-1098(87)90903-3

Cited by 11 publications

(5 citation statements)

References 5 publications

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“…The presently observed values of n (n 5 2) are most likely due to dipole-dipole interactions between the Gd3+ ions and the host paramagnetic Nd3+ ions as discussed in [20].…”

Section: Discussion Of the Resultsmentioning

confidence: 88%

EPR Linewidth Studies of Gd^{3 +}‐Doped La_xNd_1−xF₃ Single Crystals

Paradowski

Korczak

Pierre

et al. 1993

Physica Status Solidi (b)

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M. L. PARADOWSKI et al.: EPR Linewidth Studies of Gd3+-Doped La,Ndl-,F3 135 phys. stat. sol. (b) 175, 135 (1993) Subject classification: 71.70 and 76.30; S9.15 Institute of Physics, M . Curie-Sklodowska University, Lublin ') ( a ) and Laboratoire Louis Niel, C.N.R.S., Grenohle2) ( b ) EPR Linewidth Studies of Gd3 +-Doped La,Nd, -xF, Single Crystals BY M. L. PARADOWSKI (a), W. KORCZAK (a), J. PIERRE (b), and M. SUBOTOWICZ (a)The dependence of the EPR linewidths of Gd3+ ion in La,Nd, -+F3 single crystals on temperature (77 K 5 T 5 510 K) and composition (0 5 x 5 1) is analyzed to study the interactions between the paramagnetic Gd3* and Nd3+ ions. The effect of the dilution of the paramagnetic Nd3+ ions with the diamagnetic La3+ions is also discussed.La dtpendence en temperature (77 K 5 T 5 510 K) et composition (0 5 x 5 1) des largeurs de raie de RPE de l'ion Gd3+ dans des monocristaux de La,Nd, -,F3 est analysee a h d'etudier les interactions entre les ions paramagnetiques Gd3+ et Nd3+. Un effet de la dilution des ions paramagnetiques Nd3+ par des ions diamagnetiques La3+ est aussi discutt.

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“…The presently observed values of n (n 5 2) are most likely due to dipole-dipole interactions between the Gd3+ ions and the host paramagnetic Nd3+ ions as discussed in [20].…”

Section: Discussion Of the Resultsmentioning

confidence: 88%

EPR Linewidth Studies of Gd^{3 +}‐Doped La_xNd_1−xF₃ Single Crystals

Paradowski

Korczak

Pierre

et al. 1993

Physica Status Solidi (b)

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“…Further, the EPR linewidth decreases as the temperature is increased, indicating a decrease in the spin-lattice relaxation time T [7].…”

Section: Epr Spectra Above Rtmentioning

confidence: 96%

“…At room temperature, an APST crystal is monoclinic, characterized by the space group Ci,,, containing four formula units per unit cell [l]; the unit-cell parameters are: a [7], labelled as 1, 2, 3, and 4, respectively, as depicted in Fig. 1 b.…”

Section: Sample Preparation and Crystal Structurementioning

confidence: 99%

“…So far, no EPR studies above RT, as well as below 97 K, have been reported on ANST, ASST, and ACST. Further, there exist some discrepancies in the interpretation of the previously-reported EPR studies 3 to 51: (i) an incorrect formula was used in the estimation of z the spin-lattice relaxation time, as pointed out by Misra et al [7]; (ii) a spin-Hamiltonian appropriate to a monoclinic site symmetry should have been used, in accordance with the crystal structure [l], instead of the orthorhombic site symmetry used in [3 to 51; and (iii) there was no explanation provided as to why the value of the parameter b: of Gd3+ was unusually small in the ANST, ASST, and ACST hosts, as compared to that found usually in other host crystals.…”

Section: Introductionmentioning

confidence: 95%

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EPR of a Gd³⁺‐Doped NH₄Pr(SO₄)₂ · 4 H₂O Single Crystal. Study of Phase Transition and Superposition Model Calculation of Zero‐Field Splitting Parameters

Misra

1990

Physica Status Solidi (b)

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“…Thus, I x ) . This power dependence suggests that the dipole-dipole interactions might be effective in the LiYb,.,Y,,,F, crystal, in the temperature range 180 to 290 K [14].…”

Section: Host Spin-lattice Relaxation Time (Z;)mentioning

confidence: 99%

Study of Temperature Variation of EPR Linewidth of Gd³⁺‐Doped LiYb_xY_1−xF₄ Single Crystals. Estimation of Yb³⁺ Spin–Lattice Relaxation Times

Misiak

Misra

Orhun

1989

Physica Status Solidi (b)

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X-band EPR linewidths of Gd3+-doped LiYb,Yi-,F, crystals (0.0 5 z 5 1.0) are measured in t h e temperature range 4.2 t o 290 K. It is found that the peak-to-peak linewidth of the first derivative lineshape (AH,,) can be fitted to T-fl (T = temperature), where generally n < 2, in the various temperature regions, for all the crystals. AH,, is, in general, found to be quite sensitive to the mole fraction (2) of Yb3+ ions. The Yb3+ spin-lattice relaxation times (ti) are estimated in these crystals, using the theories of Anderson-Weiss and Mitsuma, taking into account the fact that there are present two different kinds of paramagnetic ions, Gd3+ and Yb3+. It is concluded that the dipole-dipole interactions play an important role in the spin-lattice relaxation of Yb3f ions.On a mesure les largeurs des raies RPE ti bande X pour l'ion Gd3+ dopant les cristaux de LiYb,Yi-,F, (0,O 5 5 5 1,O) dans I'intervalle entre les temperatures de 4,2 et 300 K. La largeur d'un pic ti I'autre selon la forme de la premiere deride de raie (AH,,) peut dtre adaptke B T-n (T = temperature), oh n < 2 en general, dans les divers intervalles de tempkrature, pour tous les cristaux. On trouve, en gkneral, que AH,, est tres sensible A la fraction mole (z) des ions Yb3+.Les temps de relaxation (ti) rbseau-spin de Yb3+ ont At6 estimks pour ces cristaux, en utilisant les theories $Anderson-Weiss et de Mitsuma, en tenant compte du fait qu'il y a, en presence, deux sortes diffkrentes d'ions paramagnktiques, Gd3+ et Yb3+. On en conclut que les interactions dipolaires jouent un r61e important dans la relaxation du rhseau-spin des ions Yb3+.

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Spin-lattice relaxation time of Yb3+ in YbCl3·6H2O

Cited by 11 publications

References 5 publications

EPR Linewidth Studies of Gd^{3 +}‐Doped La_xNd_1−xF₃ Single Crystals

EPR Linewidth Studies of Gd^{3 +}‐Doped La_xNd_1−xF₃ Single Crystals

EPR of a Gd³⁺‐Doped NH₄Pr(SO₄)₂ · 4 H₂O Single Crystal. Study of Phase Transition and Superposition Model Calculation of Zero‐Field Splitting Parameters

Study of Temperature Variation of EPR Linewidth of Gd³⁺‐Doped LiYb_xY_1−xF₄ Single Crystals. Estimation of Yb³⁺ Spin–Lattice Relaxation Times

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Spin-lattice relaxation time of Yb3+ in YbCl3·6H2O

Cited by 11 publications

References 5 publications

EPR Linewidth Studies of Gd3 +‐Doped LaxNd1−xF3 Single Crystals

EPR Linewidth Studies of Gd3 +‐Doped LaxNd1−xF3 Single Crystals

EPR of a Gd3+‐Doped NH4Pr(SO4)2 · 4 H2O Single Crystal. Study of Phase Transition and Superposition Model Calculation of Zero‐Field Splitting Parameters

Study of Temperature Variation of EPR Linewidth of Gd3+‐Doped LiYbxY1−xF4 Single Crystals. Estimation of Yb3+ Spin–Lattice Relaxation Times

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EPR Linewidth Studies of Gd^{3 +}‐Doped La_xNd_1−xF₃ Single Crystals

EPR Linewidth Studies of Gd^{3 +}‐Doped La_xNd_1−xF₃ Single Crystals

EPR of a Gd³⁺‐Doped NH₄Pr(SO₄)₂ · 4 H₂O Single Crystal. Study of Phase Transition and Superposition Model Calculation of Zero‐Field Splitting Parameters

Study of Temperature Variation of EPR Linewidth of Gd³⁺‐Doped LiYb_xY_1−xF₄ Single Crystals. Estimation of Yb³⁺ Spin–Lattice Relaxation Times