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Low-field EPR Studies of Levels near the Top of the Barrier in Mn12-Acetate Reveal a New Magnetization Relaxation Pathway


Rakvin, Boris; Žilić, Dijana; Dalal Naresh S.; Harter, Andrew; Sanakis, Yiannis
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



POVEZANOST RADA


Projekti:
0098038

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Boris Rakvin (autor)

Avatar Url Dijana Žilić (autor)

Citiraj ovu publikaciju

Rakvin, Boris; Žilić, Dijana; Dalal Naresh S.; Harter, Andrew; Sanakis, Yiannis
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)
Rakvin, B., Žilić, D., Dalal Naresh S., Harter, A. & Sanakis, Y. (2006) 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, 51-56.
@article{article, year = {2006}, pages = {51-56}, keywords = {Mn12-Ac, EPR}, journal = {Solid State Communications}, volume = {139}, issn = {0038-1098}, title = {Low-field EPR Studies of Levels near the Top of the Barrier in Mn12-Acetate Reveal a New Magnetization Relaxation Pathway}, keyword = {Mn12-Ac, EPR} }
@article{article, year = {2006}, pages = {51-56}, keywords = {Mn12-Ac, EPR}, journal = {Solid State Communications}, volume = {139}, issn = {0038-1098}, title = {Low-field EPR Studies of Levels near the Top of the Barrier in Mn12-Acetate Reveal a New Magnetization Relaxation Pathway}, keyword = {Mn12-Ac, EPR} }

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





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