High Energy Ball Milling really really effect on the CDC behavior of materials as i monitored in RFeO3 materials.

The initial activation of the mixed powders was done by high energy ball milling, a known technique for preparing homogeneous nanopowder.Citric acid as process control agent (PCA) was introduced to the initial mixed powders to prevent the cold welding and so agglomeration of the powders during milling process.

In addition, reports on their electrical, magnetic and optical properties are very low. On the other hand, efforts to synthesis of these ceramics in nanoscale form was rarely done. This work is a short report on synthesis of CeFeO3 in nanopowder form using mechanical milling and subsequent heat treatment. Investigation of the magnetic, photocatalytic and absorption properties of CeFeO3 ceramic, also its potential for colossal dielectric constant (CDC) property are the main objectives of the present study.

To get your answer, I invite you to read my recent published paper about CDC and dielectric material and hopefully you can get your answer easily. 

1) Jabbarzare, S., Abdellahi, M., Ghayour, H., Arpanahi, A., & Khandan, A. (2017). A study on the synthesis and magnetic properties of the cerium ferrite ceramic. Journal of Alloys and Compounds, 694, 800-807.

2) Shayan, A., Abdellahi, M., Shahmohammadian, F., Jabbarzare, S., Khandan, A., & Ghayour, H. (2017). Mechanochemically aided sintering process for the synthesis of barium ferrite: Effect of aluminum substitution on microstructure, magnetic properties and microwave absorption. Journal of Alloys and Compounds, 708, 538-546.

3) Saeedi, M., Abdellahi, M., Rahimi, A., & Khandan, A. (2016). Preparation and characterization of nanocrystalline barium ferrite ceramic. Functional Materials Letters, 9(05), 1650068.