Nuclear spin coherence properties of Eu-151(3+) and Eu-153(3+) in a Y2O3 transparent ceramic

作者：Karlsson J; Kunkel N; Ikesue A; Ferrier A; Goldner P

来源：Journal of Physics: Condensed Matter , 2017, 29(12): 125501.

DOI：10.1088/1361-648X/aa529a

• ODMR
• spin echoes
• rare-earth ions
• ceramics

We have measured inhomogeneous linewidths and coherence times (T-2) of nuclear spin transitions in a Eu3+ :Y2O3 transparent ceramic by an all-optical spin echo technique. The nuclear spin echo decay curves showed a strong modulation which was attributed to interaction with Y nuclei in the host. The coherence time of the 29 MHz spin transition in Eu-151(3+) was 16 ms in a small applied magnetic field. Temperature dependent measurements showed that the coherence time was constant up to 18 K and was limited by spin-lattice relaxation for higher temperatures. Nuclear spin echoes in Eu-153(3+) gave much weaker signals than for the case of Eu-151(3+). The spin coherence time for the 73 MHz spin transition in Eu-153(3+) was estimated to 14 ms in a small magnetic field. The study shows that the spin transitions of ceramic Eu3+ : Y2O3 have coherence properties comparable to the best rare-earth-doped materials available.

• 出版日期2017-3-29