Paramagnetic resonance of Fe<sup>3+</sup>in kyanite

Troup, G. J.; Hutton, D. R.

doi:10.1088/0508-3443/15/12/308

Cited by 51 publications

(17 citation statements)

References 9 publications

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“…The A c c e p t e d m a n u s c r i p t 6 authors [54] note that their values of (D, E) are quite different that the values cited from [55]. It turns out that fitting of the ZFSP sets in question yielded values lying in different areas of the parameters space.…”

Section: Applicationsmentioning

confidence: 95%

“…recognized and discussed [45]. The number of applications of the standardization idea [6][7][8][9][10] has been growing since its comprehensive extensions appeared [20,21]; see the recent papers [22][23][24] and references therein.…”

Section: Table1mentioning

confidence: 99%

“…The latter Hamiltonian is often confused in EMR literature with the crystal-field (CF) Hamiltonian, in spite of their physically different nature [5]. The standardization idea has originally been introduced in EMR area for the second-rank conventional ZFS terms based on the observation that the ratio of the orthorhombic (E) to axial (D) ZFS parameters (ZFSPs): λ = E/D can always be limited to the range (0, ± 1/3) by appropriate choice of coordinate system [6,7,8].…”

Section: Introductionmentioning

confidence: 99%

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Alternative zero-field splitting (ZFS) parameter sets and standardization for Mn2+ ions in various hosts exhibiting orthorhombic site symmetry

Kripal

Yadav

Gnutek

et al. 2009

Journal of Physics and Chemistry of Solids

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Section: Applicationsmentioning

confidence: 95%

Section: Table1mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Alternative zero-field splitting (ZFS) parameter sets and standardization for Mn2+ ions in various hosts exhibiting orthorhombic site symmetry

Kripal

Yadav

Gnutek

et al. 2009

Journal of Physics and Chemistry of Solids

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“…It is known that larger impurity ions preferentially occupy the larger lattice sites of a particular host ion. Examples are Fe 3+ in Al 2 Be0 4 [12] and Al 2 Si0 5 (cyanite) [13], [14]. Also, in NaN0 3 and KCl a marked decrease of the distribution coefficients of larger alkali ions with increasing size was observed [15].…”

Section: Discussionmentioning

confidence: 98%

Correlation of Zero Field Splittings and Site Distortions V. Mn²⁺ in Cs₂Zn₃S₄

Heming

Lehmann

1983

Zeitschrift Für Naturforschung A

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In platelets of Cs 2 Zn 3 S 4 with about 4% of the Zn substituted by Mn two nonequivalent centers of isolated Mn 2+ were observed in addition to a broad EPR signal near g = 2 which is assigned to clusters of interconnected MnS 4 units. The fine structure and hyperfine structure parameters for the single-ion centers (all in units of 1CT 4 cm -1 ) are: for centers I and II, resp. Center II arises from Zn sites of C 2 site symmetry while for center I assignment to either one of two sites with D 2 site symmetry is possible. The larger hyperfine splitting constants as well as the superposition analysis favor the larger sites which are not occupied by Zn, but are partly occupied in the analogous Mn (and Co) compounds. Superposition analysis yields the same value of + 0.12 ± 0.02 cm"' for the intrinsic zero field splitting parameter b 2 of the bridging MnS 4 units in both sites. g : is significantly higher than the free ion value indicating a higher degree of covalency than in Cds and CdGa 2 S 4 .

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“…EPR studies of Fei+ or Cr" impurities revealed four different paramagnetic centers in kyanite. However they could not be clearly assigned to crystallographic sites [6][7][8]. The high zero-field splitting prevents such study at X-band frequency because the observable transitions are mostly inside the Kramers doublets.…”

Section: Introductionmentioning

confidence: 99%

Localization of Fe3+ impurities in kyanite by EPR

2001

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An electron paramagnetic resonance (EPR) study of Fe" centers in kyanite AISi 2O, has been performed on a natural blue single crystal at 34.40 GHz. Three Fe" centers have been observed. One of them, arising from 10% of the Fe" amount, presents weak signals and few resonance lines inside Kramers doublets, the weakness of the signals and the high value of the zero-field splitting between Kramers doublets allow only the determination of the second-order parameters of the spin Hamiltonian. For the two other centers all second-and fourth-order parameters are determined. The comparison of the pseudo-symmetries of the fourth-order parameters between EPR results and crystal field calculation does not allow one to define the location of all Fei centers at Al octahedra. It is proved that Fe" is partly located at Al l position (25%). For the other observed centers it was not possible to define their location in the structure. This study is a good example of the limitation of the pseudo-symmetry method.

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Paramagnetic resonance of Fe³⁺in kyanite

Cited by 51 publications

References 9 publications

Alternative zero-field splitting (ZFS) parameter sets and standardization for Mn2+ ions in various hosts exhibiting orthorhombic site symmetry

Alternative zero-field splitting (ZFS) parameter sets and standardization for Mn2+ ions in various hosts exhibiting orthorhombic site symmetry

Correlation of Zero Field Splittings and Site Distortions V. Mn²⁺ in Cs₂Zn₃S₄

Localization of Fe3+ impurities in kyanite by EPR

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Paramagnetic resonance of Fe3+in kyanite

Cited by 51 publications

References 9 publications

Alternative zero-field splitting (ZFS) parameter sets and standardization for Mn2+ ions in various hosts exhibiting orthorhombic site symmetry

Alternative zero-field splitting (ZFS) parameter sets and standardization for Mn2+ ions in various hosts exhibiting orthorhombic site symmetry

Correlation of Zero Field Splittings and Site Distortions V. Mn2+ in Cs2Zn3S4

Localization of Fe3+ impurities in kyanite by EPR

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Paramagnetic resonance of Fe³⁺in kyanite

Correlation of Zero Field Splittings and Site Distortions V. Mn²⁺ in Cs₂Zn₃S₄