Magnetic Properties of Iron Clusters in Silver |
| |
Authors: | Elzain M Al Rawas A Yousif A Gismelseed A Rais A Al-Omari I Bouziane K Widatallah H |
| |
Institution: | 1.Department of Physics, College of Science, Box 36, Alkhod, 123, Oman ;2.Department of Physics, Faculty of Science, Khartoum University, Sudan ; |
| |
Abstract: | Time differential perturbed γ-γ angular correlation technique was used to measure the magnetic hyperfine field (MHF) at Tb
sites in the intermetallic compound Tb3In5 using the 140La → 140Ce nuclear probe. The measurements were carried out in the temperature range of 8 to 295 K. Two different temperature dependent
magnetic frequencies were observed below 30 K, which were assigned as 140Ce substituting the two inequivalent Tb sites in the orthorhombic structure of Tb3In5. The temperature dependence of MHF also shows a possible deviation from an expected Brillouin-like behavior for temperatures
below 18 K. A Néel transition at 27 K was observed from magnetization measurements in the samples. The magnetization as a
function of the applied magnetic field was measured at two temperatures, 5 and 40 K, and the results show antiferromagnetic
and a typical paramagnetic behavior, respectively. In both cases it was not observed saturation under high magnetic field. |
| |
Keywords: | 140Ce probe magnetic hyperfine field PAC spectroscopy rare earth magnetism |
本文献已被 SpringerLink 等数据库收录! |
|