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- 101. Solid State Commun. 25, 77-80 (1978) , “Exchange broadened, optically detected ESR spectra for luminescent donor-acceptor pairs in Li doped ZnO”, R. T. Cox, D. Block, A. Hervé, R. Picard and C. SantierR. HelbigApplication of optically detected ESR to the yellow photoluminescence of Li doped ZnO gives ESR spectra for shallow donor - lithium acceptor pairs, showing that at least a fraction of the yellow emission is donor-acceptor (D-A) luminescence. The distribution of separations rDA gives a spectrum of... (Read more)
- 102. J. Lumin. 12-13, 441-445 (1976) , “ESR and luminescence of trapped hole centers in ZnO and SnO2”, E. Mollwo , D. ZwingelIn SnO2 single crystals acceptor centers are found upon incorporation of Al3+ and Ga3+ ions at cation sites. After UV-excitation, holes, trapped at these centers, give rise to polarized luminescence and thermoluminescence. The structure of the centers is analysed by ESR and compared with similar... (Read more)
- 103. Z. Physik B 23, 171-181 (1976) , “Intrinsic Defects in Electron Irradiated Zinc Oxide”, B. Schallenberge, A. Hausmann
- 104. J. Catalysis 35, 167-175 (1974) , “Studies of electron spin resonance spectra and activity of supported zinc oxide catalysts for hydrogenation of ethylene”, D. L. Harrison, A. J. Parker, Marjorie J. Sharp and H. SteinerThe activities and ESR spectra of zinc oxide catalysts for hydrogenation of ethylene at 150 °C have been studied. No catalytic activity was observed for silica- or alumina-supported ZnO at surface coverages below 2–3 nominal monolayers. The ESR signal at g = 1.958 from the zinc oxide was... (Read more)
- 105. J. Chem. Phys. 60, 2148-2151 (1974) , “Formation of O– in ZnO from the dissociation of adsorbed N2O”, Ning-Bew Wong, Younes Ben Taarit, and Jack H. LunsfordPhotoinduced O ions or V-type centers have been detected in ZnO following ultraviolet irradiation at 196°C. The EPR spectrum of the ions is characterized by g=2.021 and g = 2.0026. The concentration of O was greatly... (Read more)
- 106. Solid State Commun. 15, 1475-1479 (1974) , “Optical and paramagnetic properties of ZnO-Crystals simultaneously doped with copper and hydrogen”, E. Mollwo, G. Müller and D. ZwingelIn ZnO crystals, containing both Cu and H(D), we observe characteristic absorption peaks in the near i.r. and three new EPR signals. We explain these results by the formation of impurity complexes consisting of an OH center and one or two Cu ions. (Read more)
- 107. Solid State Commun. 14, 953-956 (1974) , “Temperature dependence of the ESR spectrum of the zinc vacancy in ZnO”, D. Galland and A. HerveThe temperature dependence of the spectrum of two trapped hole centers introduced by electron irradiation in ZnO is described. The results firmly establish the identification of these centers as being two slightly inequivalent configurations of the zinc vacancy in its negative charge state. (Read more)
- 108. Solid State Commun. 14, 45-49 (1974) , “Paramagnetic and optical properties of Na-doped ZnO single crystals”, D. Zwingel and F. GärtnerESR-spectra of Na-doped ZnO single crystals are reported, caused by a hole trapped at the Na+ center. The isotropic part of the HFS is positive. An emission, due to recombination at the center, is reported, polarized c and peaked at 570 nm. The influence of covalent bonding is discussed. (Read more)
- 109. Advances in Molecular Relaxation Processes 5, 211-218 (1973) , “Chemisorption of oxygen on transition metal oxides studied by EPR”, Krystyna DyrekThe method was applied to the investigation of adsorption of oxygen on the transition metal oxides MnO, FeO, CoO, Cu2O, and their solid solutions in the diamagnetic matrices ZnO and MgO. It has been found that in the case of pure oxides and their solid solutions at high magnetic metal ion... (Read more)
- 110. Chem. Phys. Lett. 21, 421-425 (1973) , “ESR studies of aqueous suspensions of zinc oxide”, Joseph Cunningham and Sean CorkeryResults are presented from a technique which allows reproducible ESR spectra to be obtained from circulating aqueous suspensions of various zinc oxides. Singlet ESR signals with g ≈ 1.96 were observed in the dark from In-ZnO and from several zinc oxides under UV illumination. Fast and slow... (Read more)
- 111. J. Lumin. 6, 376-384 (1973) , “2S1/2 state ions in inorganic luminescent materials*1”, G. Born, A. Hofstaetter , A. ScharmannSelected examples of impurity ions with one unpaired electron in an unfilled shell are Pb3+ ions in II–IV compounds (ZnO, ZnSe, ZnTe), Pb3+ in CaWO4,F centres in alkali halides and Ag0 and Au0 atoms in radiophotoluminescent (RPL) glasses. Comparative studies of EPR, luminescence,... (Read more)
- 112. J. Lumin. 5, 385-405 (1972) , “Trapping and recombination processes in the thermoluminescence of Li-doped ZnO single crystals*1”, D. ZwingelThe thermoluminescence of Li-doped ZnO single crystals is investigated in the temperature range 4.2–300 K. A glow curve is observed with three maxima, two of them emitting the strong polarized yellow luminescence of ZnO. By varying the Li concentration in the range 0.1–200 ppm a change... (Read more)
- 113. J. Vac. Sci. Technol. 9, 87-90 (1972) , “Properties of ZnO Films Prepared by dc and rf Diode Sputtering”, J. VuillodA brief description of the dc and rf diode sputtering unit is first presented. The study of properties of the films is reviewed taking into consideration two main parameters, oxygen partial pressure and substrate temperature. Reflection electron diffraction and x-ray diffraction studies show that... (Read more)
- 114. Solid State Commun. 11, 1547-1550 (1972) , “Oxygen displacement energy in ZnO”, J. M. MeeseD. R. LockerA displacement threshold at 310 keV has been observed by electrical measurements in single crystal ZnO and has been identified as the minimum electron energy required for oxygen displacements by observing the production of F- centers above this threshold with EPR. (Read more)
- 115. J. Phys. Chem. Solids 32, 499-509 (1971) , “Trapped-hole centers containing lithium in MgO, CaO and SrO”, O. F. SchirmerWe report an ESR investigation of a center in MgO, CaO and SrO consisting of an O− ion neighbored by a substitutional Li+ ion. The center is identified by comparison with the isomorphous centers in ZnO and BeO and with the analogous V1, VOH and VF centers in the alkaline earth oxides. The... (Read more)
- 116. Phys. Lett. A 36, 447-448 (1971) , “2S1/2 -states of Pb3+-ions in CaO and ZnO”, G. Born, A. Hofstaetter , A. ScharmannEPR-spectra of Pb3+-ions in CaO and ZnO are studied at 1.6 K. The g-values and the reduction of the hyperfine interaction constants A are correlated with the partial electron transfer to the ligands. (Read more)
- 117. Phys. Rev. B 4, 3250-3252 (1971) , “Spin-Hamiltonian Parameters and Spin-Orbit Coupling for V3+ in ZnO”, R. E. Coffman, Makram I. Himaya, Kathryn NyeuThe spin-Hamiltonian parameters for ZnO: V3+ have been refined using electron-paramagnetic-resonance (EPR) line position calculations. The principal sources of error are discussed. The accurate spin-Hamiltonian parameters are used to discuss the spin-orbit coupling within the 3d manifold... (Read more)
- 118. Solid State Commun. 9, 2251-2253 (1971) , “Far infrared absorption in ZnO*1”, S. Perkowitz, R. K. Murty-Gutta , A. K. GarrisonFar infrared absorption measurements on as-grown and Li-doped ZnO have been made in the range 15-200 cm−1. A large Drude-type free-carrier absorption was observed, as were absorption bands near 115 and 160 cm−1. Combined absorption and EPR data on the Li-doped sample were interpreted... (Read more)
- 119. Surf. Sci. 27, 375-378 (1971) , “ESR evidence of surface Fermi level anchoring by surface additives on ZnO”, J. P. Bonnelle and M. Guelton
- 120. J. Catalysis 16, 44-52 (1970) , “Electron spin resonance investigation of electrical conductivity parameters of zinc oxide during surface reactions”, Morio Setaka, Kenneth M. Sancier and Takao KwanThe effect of the electron transfer process between the bulk and surface of ZnO upon oxygen sorption was investigated by measuring the changes of the following ESR parameters: the spin densities of the g = 1.96 and g ~ 2.0 signals, the intensity of a Mn2+ reference sample, and the crystal current of... (Read more)
- 121. Phys. Lett. A 33, 1-2 (1970) , “ESR spectra of the zinc vacancy in ZnO”, D. Galland and A. HerveElectron irradiated ZnO single crystals show anisotropic ESR spectra corresponding to a spin and a spin 1 hole centers. Tehy are respectively identified as the negative and the neutral charge states of the zinc vacancy. (Read more)
- 122. Phys. Lett. A 31, 147-148 (1970) , “ESR of electron irradiated ZnO confirmation of the F+ center”, J. M. Smith , W. E. VehseIrradiation of single crystals of ZnO with 2 MeV electrons produces a defect which has been identified by its ESR spectrum as an F+ center. A correlation between this center and the radiation induced optical absorption has been observed. (Read more)
- 123. Phys. Rev. B 1, 1986-1994 (1970) , “Electron Paramagnetic Resonance of V3 + Ions in Zinc Oxide”, G. Filipovich, A. L. Taylor, R. E. CoffmanThe paramagnetic resonance of trace amounts of V3+ in single-crystal hexagonal zinc oxide is reported. The EPR spectrum is fitted with an axially symmetric spin Hamiltonian with five empirically determined parameters: D, gII, g?, A, and B. The spin-Hamiltonian... (Read more)
- 124. Solid State Commun. 8, 45-47 (1970) , “A note on the splitting of the ( →← -) line in the ESR spectrum of Fe3+ in ZnO”, I. D. Campbell , J. O. CopeIons of spin which occupy inequivalent cation sites in a wurtzite lattice show ESR line splitting. An analytical expression is derived which describes the dependence of the splitting of the ( →← -) line on crystal orientation. This expression provides a convenient method of deducing... (Read more)
- 125. Solid State Commun. 8, 1559-1563 (1970) , “The yellow luminescence of zinc oxide”, O. F. Schirmer and D. ZwingelFrom a simultaneous observation of the ESR of the paramagnetic Li center and the yellow emission of ZnO, especially its polarization, it is concluded that this luminescence band is due to a recombination of an electron with the neutral Li acceptor. (Read more)
- 126. Solid State Commun. 8, 1359-1361 (1970) , “Electron paramagnetic resonance associated with Zn vacancies in neutron-irradiated ZnO”, A. L. Taylor, G. Filipovich and G. K. LindebergLines in the EPR spectrum of ZnO crystals irradiated by 3.6 × 1018cm−2 fast neutrons are ascribed to holes on oxygen atoms in the basal plane of O4 tetrahedra which surround Zn vacancies. (Read more)
- 127. Solid State Commun. 8, 1103-1106 (1970) , “ESR studies of Yb3+ impurities in zinc oxide”, P. Schreiber , A. HausmannIn zinc oxide single crystals after diffusion with Yb2O3 two ESR spectra of Yb3+ ions have been observed which are attributed to substitutional and possibly interstitial ions. The parameters of the spin Hamiltonian have been determined taking into account third order corrections and a relatively... (Read more)
- 128. Surf. Sci. 21, 1-11 (1970) , “ESR investigation of photodamage to zinc oxide powders*1”, K. M. SancierThe esr technique was used to investigate the effects of iron cyanide surface additives on photodamage to ZnO in powder form. The photodamage was monitored by the resonance at a g value of about 1.96, which is comprised of two independent resonances with g values of 1.9564 and 1.9600. The intensity... (Read more)
- 129. Solid State Commun. 7, 651-655 (1969) , “Elektronenspinresonanz an kupferdotierten ZnO-einkristallen”, I. Broser and M. SchulzESR-Untersuchungen wurden an ZnO:Cu-Einkristallen zwischen 4,2 und 1,5°K durchgeführt. Die den natürlich vorkommenden Isotopen 63Cu und 65Cu entsprechenden Hyperfeinstrukturlinien hatten eine deutlich geringere Linienbreite verglichen mit bisherigen Messungen. Die... (Read more)
- 130. Solid State Commun. 7, 579-583 (1969) , “Paramagnetic resonance of Gd3+ in ZnO”, A. HausmannZnO single crystals doped with Gd3+ by diffusion have been investigated by ESR at 35kMc/s. The spectra can be understood by a spin-Hamiltonian of axial symmetry. Further, a hyperfine interaction with odd Gd isotopes has been detected. An asymmetry of one set of finestructure lines indicates a... (Read more)
- 131. Surf. Sci. 13, 251-262 (1969) , “ESR studies of the interaction of O2, NO2, N2O, NO and Cl2 with zinc oxide”, R. D. Iyengar, V. V. Subba Rao , A. C. ZettlemoyerAn electron spin resonance study of the surface interaction of zinc oxide with oxygen, oxides of nitrogen (NO2, NO and N2O) and chlorine was made. Characteristic spectra obtained following adsorption of NO2 and NO were analyzed and attributed to rigidly adsorbed neutral molecules. Confirmation of... (Read more)
- 132. J. Catalysis 12, 278-280 (1968) , “An ESR investigation of nitrobenzene adsorbed on zinc oxide”, V. V. Subba Rao, R. D. Iyengar and A. C. ZettlemoyerAn ESR study of the interaction of nitrobenzene with nonstoichiometric ZnO surfaces was made. A 3-line spectrum with g values 1.9840, 2.0055 and 2.0225 was observed and was identified as due to nitrobenzene anion radicals strongly held to the surface. An unidentified signal at g = 2.0050 was left... (Read more)
- 133. J. Catalysis 11, 317-325 (1968) , “ESR studies on ZnO---Cr2O3 catalysts”, M. RálekW. Gunsser , A. KnappwostThe effects of the conditions of preparation of ZnO---Cr2O3 catalysts on their ESR spectra have been investigated by means of a Q-band spectrometer. The linewidths of oxides prepared by a low-temperature decomposition of the respective hydroxides in nitrogen flow are large and exhibit concentration... (Read more)
- 134. J. Phys. Chem. Solids 29, 1407-1429 (1968) , “The structure of the paramagnetic lithium center in zinc oxide and beryllium oxide”, O. F. SchirmerIf ZnO and BeO crystals containing Li are irradiated with u.v. or X-rays, a paramagnetic defect center is created consisting of a hole captured at an O2− ion next to a substitutional Li+ impurity. Because of the polarity of the crystals, the hole assumes its lowest energy, if the... (Read more)
- 135. J. Phys. Chem. Solids 29, 1369-1375 (1968) , “Paramagnetic resonance of ZnO:Mn++ single crystals”, A. Hausmann , H. HuppertzZnO single crystals doped with Mn++ have been investigated by ESR at 9.5 and 35 kMc/s. The measured spectra show minimal linewidth of 0.25 G. The resonances can theoretically be described by a spin Hamiltonian of axial symmetry of which the parameters have been determined with great accuracy.... (Read more)
- 136. Solid State Commun. 6, 457-459 (1968) , “The cubic field parameter of ions in zinc oxide crystals”, A. HausmannZnO single crystals doped with Fe3+ or Mn2+ have been investigated by ESR at 35 kMc/s. The cubic field parameter |a| has been determined with greater accuracy than before. The values are |a| = 7.1 G and |a| = 46.8 G for Mn2+ and Fe3+ respectively. Further, considerations about the macroscopic... (Read more)
- 137. J. Catalysis 9, 331-335 (1967) , “ESR evidence of CO oxidation by more than one oxygen species sorbed on ZnO”, Kenneth M. SancierAn approach is described for investigating the nature of sorbed oxygen species on a semiconductor catalyst surface and for determining their relative reactivities in a heterogeneous oxidation reaction. Experimental information as to the types of oxygen species on ZnO with presorbed oxygen, ZnO... (Read more)
- 138. J. Catalysis 6, 411-418 (1966) , “Radiation-induced catalytic conversions : Organic compounds adsorbed on solids of different electronic properties”, G. M. Zhabrova, V. I. Vladimirova, B. M. Kadenatsi, V. B. Kazanskii , G. B. PariiskiiThe low-temperature radiation-induced conversions of methanol and cyclohexane adsorbed on solids were investigated. The solids used were dielectrics (SiO2, silica-alumina, Al2O3, KF), semiconductors (ZnO, NiO), and metals (Pt, Pd). The samples were irradiated by γ-rays from Co60 at a dose rate... (Read more)
- 139. J. Catalysis 5, 314-324 (1966) , “ESR investigation of gas-solid interactions* The oxygen-zinc oxide system”, K.M. SancierESR measurements were combined with determinations of the amount of oxygen adsorbed or desorbed on ZnO in order to investigate the relationship between the solid state electronic properties of a semiconductor catalyst and the amounts and the nature of the adsorbed oxygen species. (Read more)
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