Pregled bibliografske jedinice broj: 697025
A Multiple Thermal Analysis of Ammonium Heptamolybdate Tetrahydrate
A Multiple Thermal Analysis of Ammonium Heptamolybdate Tetrahydrate // Croatica Chemica Acta, 57 (1984), 1; 75-83 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 697025 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
A Multiple Thermal Analysis of Ammonium Heptamolybdate Tetrahydrate
Autori
Topić, Mladen ; Moguš-Milanković, Andrea
Izvornik
Croatica Chemica Acta (0011-1643) 57
(1984), 1;
75-83
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
ammonium heptamolybdate tetrahydrate ; thermally stimulated current
Sažetak
Crystalline powder of ammonium heiptamolybdate tetrahydrate (AHM) was studied by use of thermally stimulated charge (TSC), differential thermal analysis (DTA), permittivity and dielectric loss measurements in the range from 113 K to 300 K. TSC performed on d.c. poied samples resulted in a homocharge release with a discontinuity in the vicinity of 200 K. TSC carr ied out in heating-cooling cycles did not confirm a recent assumption of ferroelectric activity in AHM powder. TSC of the unpoled samples showed a peak at (280 ± 10) K indicating a phase transition. A similar result was obtained by DTA showing an endothermic peak at (260±4) K. epsilon(T) and tg delta(T) increased substantially above 200 K because o which is proibably the reason for the homocharge storage in poled samples.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Ustanove:
Institut "Ruđer Bošković", Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
