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Second axial center in stoichiometric lithium tantalate
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10.1063/1.2215349
/content/aip/journal/jap/100/2/10.1063/1.2215349
http://aip.metastore.ingenta.com/content/aip/journal/jap/100/2/10.1063/1.2215349

Figures

Image of FIG. 1.
FIG. 1.

(Color online) The EPR spectra of congruent (a) and stoichiometric (b) lithium tantalate doped with low concentration of iron. band, room temperature, .

Image of FIG. 2.
FIG. 2.

(Color online) The EPR spectrum of sLT doped with of Fe. band, room temperature, .

Image of FIG. 3.
FIG. 3.

(Color online) The road map angle runs from zero at to 90° at , then from 90° at to180° at , and from 180° at to 270° at . It corresponds to the following changes of the and angles: at , at , and at .

Image of FIG. 4.
FIG. 4.

(Color online) Angular dependencies (road map) of the EPR spectra of sLT doped with of Fe. Symbols—experimental lines measured at helium temperatures in band. Solid lines—best fit for the Fe2 centers with parameters indicated in Table I.

Image of FIG. 5.
FIG. 5.

(Color online) Angular dependencies (road map) of the EPR spectra of sLT doped with of Fe. Symbols—experimental lines measured at helium temperatures in band. Solid lines—best fitting for the Fe1 centers with parameters indicated in Table I. Fitting of lines for low-intensity satellite centers is not shown.

Image of FIG. 6.
FIG. 6.

(Color online) Fragments of the ENDOR spectra of Fe1 and Fe2 centers. band, , . For a convenience of comparison the spectra are shifted to a common position of the Larmor frequency of Li nuclei.

Image of FIG. 7.
FIG. 7.

(Color online) Schematic representation of surroundings of an ion substituting for Li in .

Image of FIG. 8.
FIG. 8.

(Color online) Schematic representation of surroundings of an ion substituting for Ta in .

Tables

Generic image for table
Table I.

Parameters of crystal field (in ) and tensor for center in .

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/content/aip/journal/jap/100/2/10.1063/1.2215349
2006-07-31
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Second axial Fe3+ center in stoichiometric lithium tantalate
http://aip.metastore.ingenta.com/content/aip/journal/jap/100/2/10.1063/1.2215349
10.1063/1.2215349
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