Analysis of Site-occupation of Activator in Phosphors

The pottery in the following sections is not considered to belong to the Alto Focus complex, but to occur with it at different points in the Davis site occupation by trade or other means. If the writer appears to vacillate over what is and what is not trade pottery here, it is due in part to the problem of separating what could have been produced at the site (as extreme variations of resident styles) from what probably was not (because of some distinctive attribute which would mark it as foreign). In certain cases of pronounced deviation, a foreign origin is obvious enough, particularly when the source areas are well known. But where the whole tradition is similar as in the clay-tempered pottery of the lower Mississippi Valley region, and a great range of decorative techniques was employed for long periods of time, the problem is not easy.

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Preferred site occupation of 3d atoms in NixFe4−xN(x=1 and 3) films revealed by x-ray absorption spectroscopy and magnetic circular dichroism

Physical Review Materials ◽

10.1103/physrevmaterials.2.024407 ◽

2018 ◽

Vol 2 (2) ◽

Cited By ~ 5

Author(s):

Fumiya Takata ◽

Keita Ito ◽

Yukiharu Takeda ◽

Yuji Saitoh ◽

Koki Takanashi ◽

...

Keyword(s):

Circular Dichroism ◽

Absorption Spectroscopy ◽

Magnetic Circular Dichroism ◽

X Ray ◽

Site Occupation ◽

X Ray Absorption ◽

Circular Dichroïsm

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On the preferential site occupation of Fe in RFe4Al8and related compounds

Journal of Physics Condensed Matter ◽

10.1088/0953-8984/2/7/001 ◽

1990 ◽

Vol 2 (7) ◽

pp. 1677-1681 ◽

Cited By ~ 43

Author(s):

O Moze ◽

R M Ibberson ◽

K H J Buschow

Keyword(s):

Site Occupation ◽

Preferential Site ◽

Related Compounds

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Thermal stable red phosphor Sm3+ doped Na3MgZr(PO4)3: the synthesis, site occupation and photoluminescence property investigation

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-017-7869-3 ◽

2017 ◽

Vol 28 (24) ◽

pp. 19134-19138 ◽

Cited By ~ 3

Author(s):

Shuangyu Xin ◽

Faguang Zhou ◽

Chang Wang ◽

Zhuowei Li ◽

Shuhan Yuan ◽

...

Keyword(s):

Photoluminescence Property ◽

Red Phosphor ◽

Site Occupation ◽

Thermal Stable

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Optical and Structural Properties of a Eu(II)-Doped Silico-aluminate with Channel Structure and Partial Site Occupation

Zeitschrift für Naturforschung B ◽

10.1515/znb-2007-1211 ◽

2007 ◽

Vol 62 (12) ◽

pp. 1535-1542 ◽

Cited By ~ 5

Author(s):

Andreas Rief ◽

Frank Kubel ◽

Hans Hagemann

Keyword(s):

Channel Structure ◽

Yellow Luminescence ◽

Large Shift ◽

3 Dimensional ◽

Site Occupation ◽

Orange Yellow ◽

Linear Behavior ◽

Bright Orange ◽

Wyckoff Position ◽

The Eu

A new barium silico-aluminate phase with the stoichiometry Ba13.35(1) Al30.7Si5.3O70 has been found and characterized. The compound crystallizes in the space group P63/m (No. 176) with a = 15.1683(17), c = 8.8708(6) Å, V = 1767.5(4) Å3, Z = 1, Rw = 0.026, 32 refined parameters. A 3-dimensional matrix of Al/SiO4 tetrahedra with Ba(II) ions located in channels along the c axis builds up the structure. One of these channels is partially filled with Ba(II) ions (CN 6+3) in Wyckoff position 2a, leaving ~ 1/3 of the positions empty. The second and third type of Ba(II) ions occupy channels orientated along the c axis with CN 4+2+2 and 4+3+1, respectively. The structure shows a rare clustered arrangement of six tetrahedra filled exclusively by Al(III) and therefore is an exception to Loewenstein’s rule. The other tetrahedral positions show an Al to Si ratio of ~ 4 : 1. The Al/Si-O bond lengths in the tetrahedral Al/Si positions drawn vs. site occupation show linear behavior similar to the prediction by Vegard’s rule for solid solutions. After doping with Eu(II) the compound shows bright orange-yellow luminescence with an unusual large shift of the Eu(II) emission band.

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