Details

Autor(en) / Beteiligte

• Gawali, Swati R.
• Gandhi, Ashish Chhaganlal
• Gaikwad, Shrikrushna Shivaji
• Pant, Jayashree
• Chan, Ting-Shan
• Cheng, Chia-Liang
• Ma, Yuan-Ron
• Wu, Sheng Yun

Titel

Role of cobalt cations in short range antiferromagnetic Co3O4 nanoparticles: a thermal treatment approach to affecting phonon and magnetic properties

Ist Teil von

• Scientific reports, 2018-01, Vol.8 (1), p.1-249, Article 249

Ort / Verlag

London: Nature Publishing Group

Erscheinungsjahr

2018

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• We report the phonon and magnetic properties of various well-stabilized Co3O4 nanoparticles. The net valence in cobalt (II)/(III) cation can be obtained by subtracting the Co2+ ions in tetrahedral interstices and Co3+ ions in the octahedral interstices, respectively, which will possess spatial inhomogeneity of its magnetic moment via Co2+ in tetrahedra and Co3+ in octahedral configurations in the normal spinel structure. Furthermore, the distribution of Co2+/Co3+ governed by various external (magnetic field and temperature) and internal (particle size and slightly distorted CoO6 octahedra) sources, have led to phenomena such as a large redshift of phonon-phonon interaction and short-range magnetic correlation in the inverse spinel structure. The outcome of our study is important in terms of the future development of magnetic semiconductor spintronic devices of Co3O4.