Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/4484
Title: Muoniated radicals in the organic semiconductor zinc-phthalocyanine
Authors: Duarte, J. Piroto 
Vilão, R. C. 
Gil, J. M. 
Alberto, H. V. 
Ayres de Campos, N. 
Weidinger, A. 
Keywords: Organic semiconductors; Phthalocyanines; Hydrogen doping
Issue Date: 2003
Citation: Physica B: Condensed Matter. 326:1-4 (2003) 94-96
Abstract: [mu]SR experiments were conducted on the organic semiconductor zinc-phthalocyanine (Zn-Pc) in order to identify and characterize the muon states in this material. Transverse-field experiments at 0.5 mT reveal the existence of paramagnetic muon states in Zn-Pc, with the formation probability of nearly 100%. Two different muoniated radicals were detected, with hyperfine parameters of 127 and 142 MHz; muonium is thus bound to the Zn-Pc molecule at two different sites. Preliminary longitudinal field measurements indicate the onset of spin dynamics above 200 K. The observed relaxation is interpreted as due to spin exchange scattering with charge carriers.
URI: http://hdl.handle.net/10316/4484
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
file404e4035661541c9be6dd088787a8a43.pdf90.2 kBAdobe PDFView/Open
Show full item record

Page view(s)

234
checked on Dec 11, 2019

Download(s)

81
checked on Dec 11, 2019

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.