Effect of air annealing on the structure, dielectric and magnetic properties of (Co, Ni) co-doped SnO₂ nanoparticles

TY - JOUR

T1 - Effect of air annealing on the structure, dielectric and magnetic properties of (Co, Ni) co-doped SnO2 nanoparticles

AU - Khan, Rajwali

AU - Zulfiqar,

AU - Rahman, Muneeb Ur

AU - Rehman, Zia Ur

AU - Fashu, Simbarashe

N1 - Publisher Copyright: © 2016, Springer Science+Business Media New York.

PY - 2016/10/1

Y1 - 2016/10/1

N2 - After our discovery of room temperature ferromagnetism in the (Co, Ni) co-doped SnO2 nanoparticles by co-precipitation method, we successfully annealed all (Co, Ni) co-doped SnO2 diluted magnetic nanoparticles in air at 800 °C. The effect of annealing on dielectric and magnetic properties of (Co, Ni) co-doped SnO2 diluted magnetic nanoparticles was investigated. The as-synthesized (Co, Ni) co-doped SnO2 nanoparticles were annealed in air at 800 °C for 2 h in an electric furnace. The dielectric constant and dielectric loss values of all (Co, Ni) co-doped SnO2 samples decrease whereas, the electrical conductivity value increased with an increase in Ni co-doped concentration. Room temperature ferromagnetic behavior was observed in (Co, Ni) co-doped SnO2 samples. Increasing the Ni content up to 2 % leads to an increase ferromagnetic behavior and beyond that the ferromagnetic behavior decreased. A comparative study shows that (Co, Ni) co-doped SnO2 nanoparticles annealed in air at 800 °C have an excellent dielectric, magnetic properties and higher electrical conductivity than that of the (Co, Ni) co-doped SnO2 annealed in air at 600 °C, indicating that these nanoparticles can be used for high frequency devices, ultrahigh dielectric materials and spintronics.

AB - After our discovery of room temperature ferromagnetism in the (Co, Ni) co-doped SnO2 nanoparticles by co-precipitation method, we successfully annealed all (Co, Ni) co-doped SnO2 diluted magnetic nanoparticles in air at 800 °C. The effect of annealing on dielectric and magnetic properties of (Co, Ni) co-doped SnO2 diluted magnetic nanoparticles was investigated. The as-synthesized (Co, Ni) co-doped SnO2 nanoparticles were annealed in air at 800 °C for 2 h in an electric furnace. The dielectric constant and dielectric loss values of all (Co, Ni) co-doped SnO2 samples decrease whereas, the electrical conductivity value increased with an increase in Ni co-doped concentration. Room temperature ferromagnetic behavior was observed in (Co, Ni) co-doped SnO2 samples. Increasing the Ni content up to 2 % leads to an increase ferromagnetic behavior and beyond that the ferromagnetic behavior decreased. A comparative study shows that (Co, Ni) co-doped SnO2 nanoparticles annealed in air at 800 °C have an excellent dielectric, magnetic properties and higher electrical conductivity than that of the (Co, Ni) co-doped SnO2 annealed in air at 600 °C, indicating that these nanoparticles can be used for high frequency devices, ultrahigh dielectric materials and spintronics.

UR - http://www.scopus.com/inward/record.url?scp=84974851594&partnerID=8YFLogxK

U2 - 10.1007/s10854-016-5144-7

DO - 10.1007/s10854-016-5144-7

M3 - 文章

AN - SCOPUS:84974851594

SN - 0957-4522

VL - 27

SP - 10532

EP - 10540

JO - Journal of Materials Science: Materials in Electronics

JF - Journal of Materials Science: Materials in Electronics

IS - 10

ER -