Crystal growth, spectroscopic and crystal field studies of [N(CH3)4]2MnCl4 and [N(CH3)4]2CoCl4 single crystals in the paraelectric phase

Exchange charge model calculations of crystal field parameters and crystal field energy levels for [N(CH3)4]2CoCl4 and [N(CH3)4]2MnCl4 single crystals

“…The optical transmittance and absorbance were measured [27] and used to estimate the absorption coefficient and the optical band gap E g . In the present paper, we continue and extend our previous studies of the A 2 BX 4 family members [24][25][26][27][28][29][30][31].…”

“…This conclusion is supported by values of Dq parameters for both crystals reported in [31], namely, 346.9 cm −1 for TMA-CoC and 395.0 cm −1 for TMA-MnC.…”

Crystal structure and spectroscopic study of bis-tetrapropylammonium hexachlorodicuprate(II), [N(C3H7)4]2Cu2Cl6

“…The materials based upon substituted complex ammoniums with halogenated metals such as Hg, Cd, Zn, Mn and Cu etc. present very interesting physical properties [6][7][8][9][10][11][12].…”

Crystal field analysis of the absorption spectra and electron–phonon interaction in Ca3Sc2Ge3O12:Ni2+

“…The ECM has been successfully applied for the calculations of the energy levels of both rare earth [5,[9][10][11][12] and transition metal ions in different hosts as well [13][14][15][16][17][18][19][20][21][22] and analysis of the electron-phonon coupling and non-radiative transitions [23][24][25].…”