ISSN:
1573-7357
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The magnetic properties of RE2Mo2O7 (RE=Gd3+, Tb3+, Dy3+, Ho3+, Er3+, Tm3+, and Yb3+) and of solid solutions of the type (Nd1−x A x )2Mo2O7 (A=Yb or Er; 0.05≤x≤0.4) have been studied using an ac mutual inductance bridge. All the compounds were found to exhibit magnetic ordering in the neighborhood of or below 77 K. The data have been analyzed using (i) the available susceptibility data on Y2Mo2O7, (ii) a ferromagnetic coupling among the Mo4+ ions to obtain the contribution from the RE3+ ion, and (iii) the available susceptibility data on RE2Ti2O7 to obtain the contribution from the Mo4+ ions. It was found that procedure (iii) gave the most satisfactory explanation of the magnetic ordering. The results indicated that (1) the Mo4+ ions become ordered magnetically, (2) the behavior of the RE3+ ions is almost the same as in the isostructural RE2Ti2O7 and RE2V2O7 compounds, and (3) the susceptibility values differ appreciably as we go from Nd3+ to Yb3+, possibly due to narrowing of the π* Mo-O conduction band.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00682127
Permalink