Synthesis and Structure of New BiMn2MO6 Compounds Where M=P, As, or V

Xun, X.; Uma, S.; Yokochi, Alex; Sleight, A.W.

doi:10.1006/jssc.2002.9654

Cited by 31 publications

(28 citation statements)

References 16 publications

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“…Interesting properties such as a nonlinear optical response (13,14,16), ferroelectricity (6) and high oxygen ion conductivity (17) were found in some of these new compounds. Recently, we have reported the synthesis of BiMn 2 PO 6 , BiMn 2 VO 6 , BiMn 2 AsO 6 , and BiMnPO 5 (18,19 4 and is due to a charge transfer transition, O 2p/Bi 6 s to V 3d. For the preparation of polycrystalline BiMnAsO 5 , the reactants with a 1:1:1 ratio were sealed in an evacuated silica ampoule and heated at 8001C for 30 h and quenched.…”

Section: Introductionmentioning

confidence: 98%

Synthesis and Structure of BiMnVO5 and BiMnAsO5

Xun

Yokochi

Sleight

2002

Journal of Solid State Chemistry

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Section: Introductionmentioning

confidence: 98%

Synthesis and Structure of BiMnVO5 and BiMnAsO5

Xun

Yokochi

Sleight

2002

Journal of Solid State Chemistry

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“…;X = P, As, V) was successfully achieved by tuning the n value. [10][11][12][13][14][15][16][17][18][19] In this paper,t he study of opticalp roperties of the n = 2m embersr epresent the first step for extracting the structural key parameters prior to as ystematization of optical properties as af unctiono fn. Ar ecent report on the optical properties of undoped BiMg 2 (XO 6 )( X= P, V), and dopedw ith trivalent lanthanide ions, established room temperature emission of Bi 3 + ions in this structural type, although the possibility for the presenceo fd efectc enters was argued.…”

Section: Introductionmentioning

confidence: 99%

Bonding Scheme and Optical Properties in BiM₂O₂(PO₄) (M=Cd, Mg, Zn); Experimental and Theoretical Analysis

Olchowka

Mentré

Kabbour

et al. 2017

Chemistry A European J

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Luminescence properties of the Bi(M,M') PO (M=Mg, Zn, Cd) series have been rationalized as a function of the M element using optical spectroscopy, as well as empirical and first principles calculations. The latter yielded indirect band gaps for all compounds with energies between 2.64 and 3.62 eV, whereas luminescence measurements exhibit bright warm white emission luminescence even at room temperature assigned to Bi transitions with, for example, 22.8 % quantum yield for M=Mg. The energies of the excitation maxima are shifted with the covalent character of the Bi-O bond by inductive effects of the neighboring M-O bonds. This is discussed on the basis of empirical and electronic structure calculations. Strikingly, in all the investigated compounds, an excitation process occurring at energies higher than the band gaps is observed, which seems to be intrinsic to the s →sp electronic transitions of the Bi ions. Concerning the emission process, a direct correlation between the lone pair (LP) activity and the emission energy upon change of the lattice parameters was established governing the LP stereo-activity in the BiMg Cd PO system. As a result, the possibility for tunable optical properties appears realistic in the Bi O -MO-X O (X=P, V, As, etc.) systems taking into account the diversity of reported or novel crystal structures that can be designed using well-established rules of crystal chemistry.

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“…Particularly, the 6s 2 lone pair of the bismuth has a profound influence on the resulting structure and properties of this family of mixed metal oxides [2][3][4][5][6][7][8][9][10][11][12]. Many of these structures can be viewed as consisting of (OBi) 4 or (OBiM) 4 (M ¼metal ion) tetrahedral units leading to layers or chains that are connected by XO 4 (X ¼P, V, As) groups [1].…”

Section: Introductionmentioning

confidence: 98%