Details

Autor(en) / Beteiligte

• Desai, Mrugesh
• Prasad, Shiva
• Venkataramani, N.
• Samajdar, Indradev
• Nigam, A. K.
• Keller, N.
• Krishnan, R.
• Baggio-Saitovitch, E. M.
• Pujada, B. R.
• Rossi, A.

Titel

Anomalous variation of coercivity with annealing in nanocrystalline NiZn ferrite films

Ist Teil von

• Journal of applied physics, 2002-05, Vol.91 (10), p.7592-7594

Erscheinungsjahr

2002

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The sputter deposited NiZn ferrite thin films were studied as a function of annealing temperature. The magnetization showed a monotonic increase with increasing annealing temperature. The coercivity shows a minimum at annealing temperature of 400 °C and shows a value of 14 Oe. Transmission electron microscopy study indicated that the grain size increases from ∼3 nm for the as-deposited case to ∼15 nm for the film annealed at 800 °C. The observed coercivity behavior could be attributed to the defects present in the films, the change in cation distribution, and the grain growth.