Yusuf, S. M. ; Sahana, M. ; Dörr, K. ; Müller, K.-H. (2002) Effect of Ga substitution on the magnetic properties of La0.67Ca0.33Mn0.75Ga0.25O3 Applied Physics A: Materials Science & Processing, 74 (S1). s622-s624. ISSN 0947-8396
Full text not available from this repository.
Official URL: https://link.springer.com/article/10.1007%2Fs00339...
Related URL: http://dx.doi.org/10.1007/s003390201567
Abstract
The effects of 25 at. % Ga substitution on the Mn site in the ferromagnetic La0.67Ca0.33Mn3 perovskite (TC = 265 K)have been studied by ac susceptibility, dc magnetization, neutron-diffraction (ND) and neutron-depolarization (NDP) techniques. The ND study shows a complete absence of long-range magnetic ordering in the substituted sample. However, the presence of spin clusters (with net moments) at T < 48 K is confirmed from the NDP study. Under external fields, spin clusters are found to persist at T > 48 K. A temperature-independent cluster size and moment are prominent at T ≲ 30 K Above 30 K (blocking temperature), superparamagnetic relaxation is evident
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Springer Verlag. |
| ID Code: | 112386 |
| Deposited On: | 01 Dec 2017 12:06 |
| Last Modified: | 01 Dec 2017 12:06 |
Repository Staff Only: item control page
