Electrolytic coloration below 100°C and spectral properties of potassium alum crystals

Gu, Hongen; Li, Yutong

doi:10.1016/j.saa.2014.12.087

Cited by 8 publications

(4 citation statements)

References 18 publications

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“…Gu and Li 5 have carried out spectral properties of AFeSD and potassium alum. Gu and Ho 6 have done spectral properties studies on AFeSD alum and ammonium alum.…”

Section: Petrusevkimentioning

confidence: 99%

Study of Dielectric Constant and Loss Tangent of Ammonium Iron Alum

2016

Chem Sci Trans

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Abstract:With the help of double-time temperature dependent Green's function method and modifying pseudospin-lattice coupled mode model by adding third-and fourth-order phonon anharmonic interactions terms, expressions for ferroelectric mode frequency, dielectric constant and loss tangent have been derived. By fitting model values of physical quantities in above expressions, temperature dependence of above quantities have been calculated numerically. Theoretical results are compared with experimental results of others, which show agreement.

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“…Gu and Li 5 have carried out spectral properties of AFeSD and potassium alum. Gu and Ho 6 have done spectral properties studies on AFeSD alum and ammonium alum.…”

Section: Petrusevkimentioning

confidence: 99%

Study of Dielectric Constant and Loss Tangent of Ammonium Iron Alum

2016

Chem Sci Trans

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“…Yauri and Aliyu [14] studied the synthesis and analysis of potassium aluminium alum from a waste aluminium can. Gu and Li [15] studied the electrolytic coloration below 373 K and spectral properties of potassium alum crystals. Gu and Hao [16] studied the electrolytic coloration below 273 K and spectral representation properties of ammonium alum crystals with the help of a pointed anode.…”

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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“…Sachdeva et al [8] have done growth studies on alums. Gu and Li [9] have done spectral studies of alums. Gu and Hao [10] have studied electrolytic coloration below 0 ᶱ C and spectral properties of ammonium alum crystals using a pointed anode.…”

Section: Introductionmentioning

confidence: 99%

Changes in Ferroelectric Properties of Masd Alum Along With Temperature by Using PLCM Model

Mamgain¹,

Upadhyay²

2019

J. Mountain Res.

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With addition of third-and fourth-order phonon anharmonic interactions, and extra spin-lattice interaction term into pseudospin-lattice coupled mode (PLCM) model, MASD alum has been studied. Employing double time temperature dependent Green′s function technique expressions for shift and width of response function, normal mode frequency, dielectric constant and loss stangent have been derived for MASD alum. Numerical calculation has been done. Theoretical results have been compared with experimental results of Pepinsky et al. [16]. A good agreement has been found.

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Electrolytic coloration below 100°C and spectral properties of potassium alum crystals

Cited by 8 publications

References 18 publications

Study of Dielectric Constant and Loss Tangent of Ammonium Iron Alum

Study of Dielectric Constant and Loss Tangent of Ammonium Iron Alum

Dielectric properties of ammonium iron sulphate-dodecahydrate alum crystal

Changes in Ferroelectric Properties of Masd Alum Along With Temperature by Using PLCM Model

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