title: 139La nuclear magnetic resonance characterisation of La2O3 and La1-xSrxMO3 where M = Cr, Mn or Co.
abstract: 139La Nuclear magnetic resonance (NMR) spectra have been used to obtain nuclear quadrupole coupling parameters for La2O3 and a series of perovskites La1-xSrxMO3 (where M = Cr, Mn or Co). Depending on the doping level of SrO2 these materials are either paramagnetic or ferromagnetic at room temperature. Magnetic transferred hyperfine effects are strongly in evidence in the Mn compounds. A 59Co NMR spectrum was observed in LaCoO3. A precision measurement of the nuclear quadrupole coupling constant in La2O3 was made by nuclear quadrupole resonance (NQR) spectroscopy.
authors: CSIRO Division of Materials Science and Technology, Clayton, Victoria, Australia.
authors: T J
authors: TJ
authors: Bastow
mesh_terms: D017610:Calcium Compounds / Q000737:chemistry*; D002857:Chromium / Q000737:chemistry*; D003035:Cobalt / Q000737:chemistry*; D007811:Lanthanum / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D009532:Nickel / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: D017610:Calcium Compounds; D010087:Oxides; D002857:Chromium; C059910:perovskite; D003035:Cobalt; D007811:Lanthanum; D009532:Nickel; D014025:Titanium