A Textbook of Physical Chemistry – Volume 1
“A Textbook of Physical Chemistry – Volume 1 by Mandeep Dalal” is now available globally; including India, America and most of the European continent. Please ask at your local bookshop or get it online here.
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A Novel Route to find Judd-Ofelt Parameters in Tb-Doped Powders
The calculation of Judd-Ofelt parameters for Tb3+-doped powders from the emission spectrum is not as easy as Eu3+ case, because the transitions observed are usually 5D4 ⟶ 7FJ (J = 6, 5, 3, 2) that do not correspond to a single intensity parameter. In other words, the squared reduced matrix elements of order two, four and six are having non-zero values for all these transitions. Moreover, three out of these four transitions (5D4 ⟶ 7F5, 5D4 ⟶ 7F4 and 5D4 ⟶ 7F3) are also having a magnetic-dipole contribution which must be subtracted before any Judd-Ofelt calculation is carried out. Complicating this further, there is no pure magnetic-dipole allowed (like 5D0 ⟶ 7F1 in Eu3+) transition in the emission spectrum of trivalent terbium that can be used as a reference to calculate the refractive index of the host matrix.
A Textbook of Inorganic Chemistry – Volume 1
“A Textbook of Inorganic Chemistry – Volume 1 by Mandeep Dalal” is now available globally; including India, America and most of the European continent. Please ask at your local bookshop or get it online here.
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