ESR Study of Mn²⁺in the Impure Ising Linear Chain [(CH₃)₃NH]CoCl₃·2H₂O: Mn

Band structure and optical electron spectra of (TrMA)CoCl3·2H2O crystal

“…6), so the expected total magnetic moment of the crystal is not equal to zero. This result is supported by the experimental evidence of magnetism in the TrMA-CoCl 3 crystal (second-order antiferromagnetic phase transition at the temperature 4.135 K [1,4] E40:3 eV (Fig. 6), that also agrees qualitatively with the disappearing of the magnetic moment of the crystal for higher temperatures (T44:135 K).…”

“…Trimethylammonium trichlorocobaltate dihydrate crystal, [NH(CH 3 ) 3 ]CoCl 3 Á 2H 2 O (furthermore, TrMA-CoCl 3 ), belonging to the crystal groups of AMeCl 3 Á 2H 2 O and AMeCl 3 (A ¼ N(CH 3 ) 4 , NH(CH 3 ) 3 , NH 2 (CH 3 ) 2 ; Me ¼ Cu, Co, Mn, Ni) have been studied actively [1][2][3][4][5][6], first of all due to their specific magnetic properties at low temperatures [1][2][3][4]6]. This crystal undergoes antiferromagnetic second-order phase transition at 4.135 K. The room temperature characteristics of the crystal (crystal structure, magnetic susceptibility, specific heat) have been reported in Ref.…”

Dielectric properties and absorption spectra of trimethylammonium trichlorcobaltate dihydrate single crystals

“…Crystals with general formulae AMeCl 3 × 2H 2 O and AMeCl 3 (A = N(CH 3 ) 4 , NH(CH 3 ) 3 , NH 2 (CH 3 ) 2 ; Me = Cu, Co, Mn, Ni) have been the object of considerable attention during the past years [1 -6] first of all due to their specific magnetic properties at low temperatures [1][2][3][4]6]. In particular, the crystal of trimethylammonium trichlorcobaltate dihydrate [NH(CH 3 ) 3 ]CoCl 3 × 2H 2 O (TrMA-CoCl 3 ) at 4.135 K undergoes a second-order phase transition and has the property of an anisotropic low-dimensional Ising system with canted antiferromagnetic behaviour at low temperature [1,4].…”

“…In particular, the crystal of trimethylammonium trichlorcobaltate dihydrate [NH(CH 3 ) 3 ]CoCl 3 × 2H 2 O (TrMA-CoCl 3 ) at 4.135 K undergoes a second-order phase transition and has the property of an anisotropic low-dimensional Ising system with canted antiferromagnetic behaviour at low temperature [1,4]. The room temperature crystal structure, single crystal magnetic susceptibility determination and measurement of specific heat of the crystal have been reported [1].…”

Dielectric and Dilatometric Properties of NH(CH3)3CuCl3·2H2O Low Dimensional Ferroics

“…The related crystals with general (39) formulae AMeCl 3 · 2H 2 O and AMeCl 3 (A = N(CH 3 ) 4 , NH(CH 3 ) 3 , NH 2 (CH 3 ) 2 ; Me = Cu, Co, Mn, Ni) have been the object of considerable attention during the past years [2][3][4][5][6][7] first of all due to their specific magnetic properties at low temperatures [2][3][4][5]7].…”