Pregled bibliografske jedinice broj: 256789
Low-field EPR Studies of Levels near the Top of the Barrier in Mn12-Acetate Reveal a New Magnetization Relaxation Pathway
Low-field EPR Studies of Levels near the Top of the Barrier in Mn12-Acetate Reveal a New Magnetization Relaxation Pathway // Solid State Communications, 139 (2006), 51-56 (međunarodna recenzija, članak, znanstveni)
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Naslov
Low-field EPR Studies of Levels near the Top of the Barrier in Mn12-Acetate Reveal a New Magnetization Relaxation Pathway
Autori
Rakvin, Boris ; Žilić, Dijana ; Dalal Naresh S. ; Harter, Andrew ; Sanakis, Yiannis
Izvornik
Solid State Communications (0038-1098) 139
(2006);
51-56
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Mn12-Ac; EPR
Sažetak
We show that X-band electron paramagnetic resonance (EPR) measurements using a dual-mode resonance cavity can directly probe the levels near the top of the magnetization reversal barrier in the single-molecule magnet (SMM) Mn12-acetate. The observed transitions are much sharper than those reported in high-field EPR studies. The observed temperature dependence of the line positions points to the presence of a spin-diffusional mode. The correlation time for such fluctuations is of the order of 6 10-8 s at 10 K, and follows an Arrhenius activation energy of 35-40 K. These results open a new avenue for understanding the mechanism of tunneling and spin-lattice relaxations in these SMMs.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
