Repozytorium
Wyszukaj
Kolekcje
Inne
Weak exchange interactions in heteronuclear monocrystal CuPr2(CCL3COO)8·6H2O.
Autorzy
Rok wydania
1999
Czasopismo
Numer woluminu
41
Strony
2154-2157
Kolekcja
Język
Rosyjski
Typ publikacji
Artykuł
The CuPr2(CCl3COO)8 · 6H2O new heteronuclear crystal, formed of chains, containing copper and praseodymium ions, is synthesized and studied through the EPR method on the frequency of 9.36 GHz within the temperature range from the room one up to 10 K. Th EPR spectra, characteristic for the copper ions isolated polyhedrons with gz = 2.330 ± 0.005, gx,y = 2.053 ± 0.005, Az = 139x10-4 cm-1, Ax,y < 26x10-4 cm-1 are observed at the temperatures of T ∼ 300-130 K. The complex spectrum, connected with manifestation of weak exchange interactions between the copper ions in the chain (JCu-Cu ΣSi · Si+1), JCu-Cu = 0.015 cm-1 at T = 10 K, is observed in the area of T < 130 K. The value of the exchange interaction smoothly decreases with temperature growth. The supposition on participation of the praseodymium ions orbitals in the process of indirect exchange between the copper ions is made
Podobne publikacje
Spectroscopy and magnetism of polymeric Ln(CCL3COO)3· 2 H2O and their heteronuclear Ln2Cu(CCl3COO)8·6H2O analogues (Ln=Sm,Gd).
Legendziewicz Janina, Borzechowska Małgorzata, Oczko Grażyna, Meyer G.
Comparative magnetic studies of (Sm, Nd) trichloroacetates and their heteronuclear CuLn2(CCl3COO)8·6H2O systems: structure and spectroscopy of a new type of Eu trichloroacetate.
Wojciechowski W., Legendziewicz Janina, Puchalska Małgorzata, Ciunik Zbigniew
Synthesis and crystal structure of the heteronuclear chain trichloroacetate CuNd2(Cl3CCOO)8· 6H2O.
Kutlu I., Meyer G., Oczko Grażyna, Legendziewicz Janina