Low-temperature electrolytic coloration and spectral property of ammonium alum crystals

Gu, Hongen; Tian, Pin; Li, Yutong; Hao, Xiaoqing

doi:10.1016/j.jlumin.2012.01.058

Cited by 4 publications

(2 citation statements)

References 16 publications

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“…Mbow et al [12] experimentally investigated the adjuvant action of ammonium iron alum crystal. Gu et al [13] have studied the low-temperature thermal electrolytic coloration and spectral properties of ammonium alum crystals under various voltages. Yauri and Aliyu [14] studied the synthesis and analysis of potassium aluminium alum from a waste aluminium can.…”

Section: Introductionmentioning

confidence: 99%

Dielectric properties of ammonium iron sulphate-dodecahydrate alum crystal

Khan

2022

Mater. Plus

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The statistical Green function theory and extended two sublattice pseudospin coupled-mode model Hamiltonian. The modified model summing with phonon anharmonic couplings, extra spin-lattice couplings, direct spin-spin coupling together with an applied electric field has been used to explain the dielectric properties of ammonium iron alum crystal. The expressions for energy shift, linewidth, ferroelectric soft mode frequency, dielectric permittivity, and dielectric loss tangent are derived. By fitted the model values of different parameters in the above theoretical expressions. The temperature dependence of soft mode frequency, dielectric permittivity, and dielectric loss properties have been numerically calculated. Our theoretical obtained results compared well agreement with experimental results reported by others.

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Section: Introductionmentioning

confidence: 99%

Dielectric properties of ammonium iron sulphate-dodecahydrate alum crystal

Khan

2022

Mater. Plus

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“…That is, O 2− -doped LiF crystals can be colored electrolytically at various coloration temperatures and voltages using a homemade electrolysis apparatus with a pointed cathode and a flat anode. In our recent researches, various inorganic crystals containing anionic impurities or crystalline water and organic crystals have been colored electrolytically using a homemade electrolysis apparatus [15][16][17][18][19][20][21][22][23][24]. In this work, OMC LiF crystals are colored electrolytically using the same electrolysis apparatus with a pointed cathode and a flat anode.…”

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confidence: 99%