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7140634 
Journal Article 
Cluster glass like behavior of magnetoelectric PbNi1/3Nb2/3O3 ceramics 
Preeti; Pandey, A; Selvamani, R; Shekhar, C; Gupta, SM; , 
2017 
AMER INST PHYSICS 
MELVILLE 
WOS:000412824400625 
Dielectric properties of single phase PbNi1/3Nb2/3O3 (PNN) ceramic prepared by two step coulmbite method has been investigates thoroughly. The value of degree of relaxational constant Delta T-m similar to 24, and diffuseness parameter calculated from the modified Curie-Weiss fitting delta(A) similar to 111, suggests higher dielectric relaxation strength for PNN in comparison to well-known PbMg1/3Nb2/3O3 PMN. Frequency dependence of temperature of dielectric maximum (epsilon(m)') is fitted with Arrhenius, Dipolar glass, stretched exponential and cluster glass model. The attempt frequency of physically acceptable process has been obtained from cluster glass model, which indicates critical slowing down of PNR dynamics. 
Bhattacharya, S; Singh, S; Das, A; Basu, S; 
61st DAE-Solid State Physics Symposium 
Bhubaneswar, INDIA