Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 230815

Spin-echo EPR spin-probe measurement of the microsecond-range magnetic field fluctuations near the surface of crystals of the nanomagnet Mn12-Ac


Rakvin, Boris; Žilić, Dijana; Dalal, Naresh S.
Spin-echo EPR spin-probe measurement of the microsecond-range magnetic field fluctuations near the surface of crystals of the nanomagnet Mn12-Ac // Solid State Communications, 136 (2005), 518-522 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 230815 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Spin-echo EPR spin-probe measurement of the microsecond-range magnetic field fluctuations near the surface of crystals of the nanomagnet Mn12-Ac

Autori
Rakvin, Boris ; Žilić, Dijana ; Dalal, Naresh S.

Izvornik
Solid State Communications (0038-1098) 136 (2005); 518-522

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Mn12-Ac; NMP-TCNQ; EPR

Sažetak
Electron spin-echo detected EPR (ED-EPR) at the X-band, using the spin probe N-methylphenazinium-tetracyanoquinodimethane (NMP-TCNQ), enabled us to detect fluctuations of the local magnetic field close to the surface of a single crystal of [Mn12O12(CH3COO)16(H2O)4].2CH3COOH.4H2O (Mn12-Ac) in its superparamagnetic regime. The ED-EPR signal from NMP-TCNQ is unexpectedly broad in comparison to standard sharp and intense spectrum detected by continuous wave EPR (CW-EPR). This broadened peak represents inhomogeneous broadening, whose homogenous component whose line width, δ , was related to its phase memory time TM as δ ~ 1/TM ~1/T2 ; TM was found to be in the microsecond range around 15 K. The temperature dependence of TM follows that of the bulk magnetization fluctuations. The Arrhenius activation energy for these probe detected fluctuations is ~ 45 K, with a which is distinctly lower than that known for the bulk magnetization reversal for Mn12-Ac, implicating a significant role for surface effects.

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.
Spin-echo EPR spin-probe measurement of the microsecond-range magnetic field fluctuations near the surface of crystals of the nanomagnet Mn12-Ac // Solid State Communications, 136 (2005), 518-522 (međunarodna recenzija, članak, znanstveni)
Rakvin, B., Žilić, D. & Dalal, N. (2005) Spin-echo EPR spin-probe measurement of the microsecond-range magnetic field fluctuations near the surface of crystals of the nanomagnet Mn12-Ac. Solid State Communications, 136, 518-522.
@article{article, year = {2005}, pages = {518-522}, keywords = {Mn12-Ac, NMP-TCNQ, EPR}, journal = {Solid State Communications}, volume = {136}, issn = {0038-1098}, title = {Spin-echo EPR spin-probe measurement of the microsecond-range magnetic field fluctuations near the surface of crystals of the nanomagnet Mn12-Ac}, keyword = {Mn12-Ac, NMP-TCNQ, EPR} }
@article{article, year = {2005}, pages = {518-522}, keywords = {Mn12-Ac, NMP-TCNQ, EPR}, journal = {Solid State Communications}, volume = {136}, issn = {0038-1098}, title = {Spin-echo EPR spin-probe measurement of the microsecond-range magnetic field fluctuations near the surface of crystals of the nanomagnet Mn12-Ac}, keyword = {Mn12-Ac, NMP-TCNQ, 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





Contrast
Increase Font
Decrease Font
Dyslexic Font