Details

Autor(en) / Beteiligte

• Wang, Yan
• Wu, Xinming
• Zhang, Wenzhi
• Chen, Weixing

Titel

Synthesis and electromagnetic properties of La-doped Ni–Zn ferrites

Ist Teil von

• Journal of magnetism and magnetic materials, 2016-01, Vol.398, p.90-95

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The La3+ doped spinel ferrites, Ni0.8Zn0.2LaxFe2−xO4, were prepared by a sol–gel method. The samples were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), vibrating sample magnetometer (VSM) and vector network analyzer (VNA). Results show that La3+ can completely substitute into the lattice of Ni0.8Zn0.2Fe2O4 and exist mostly in the form of lamellar structure. Ni0.8Zn0.2LaxFe2−xO4 (X=0–0.1) show the behaviors of the soft magnets and the saturation magnetization (Ms) decreases with the increasing of La3+ content. The electromagnetic property of Ni0.8Zn0.2La0.06Fe1.94O4 is below −10dB at 3.1–5.9GHz and its minimum loss value is −15.43dB at 5.1GHz. Therefore, the introduction of La3+ improves the microwave absorbing properties of Ni0.8Zn0.2Fe2O4. •Synthesizing Ni0.8Zn0.2LaxFe2−xO4 (X=0–0.1) by a sol–gel method.•Preparing Ni0.8Zn0.2LaxFe2−xO4 with nanometer scale grains.•The doping of La possesses good electromagnetic properties.•Potential applications in magnetic materials and microwave absorbers.