139La Nuclear magnetic resonance characterisation of La2O3 and La1−xSrxMO3 where M = Cr, Mn or Co

✍ Scribed by T.J. Bastow

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 489 KB
• Volume: 3
• Category: Article
• ISSN: 0926-2040
• DOI: 10.1016/0926-2040(94)90047-7

✦ Synopsis

39La Nuclear magnetic resonance (NMR) spectra have been used to obtain nuclear quadrupole coupling parameters for La,O, and a series of perovskites La, _$,MO, (where M = Cr, Mn or Co). Depending on the doping level of SrO, 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 LaCoO,. A precision measurement of the nuclear quadrupole coupling constant in La,O, was made by nuclear quadrupole resonance (NQR) spectroscopy.