Structural, magnetic and dielectric properties of Ni doped LiInCr4O8 breathing pyrochlore

Crystal structural, magnetic, and dielectric properties of Cobalt−doped breathing pyrochlore LiInCr4−xCoxO8

“…The M(H) curve does not show a saturated state in the field up to 80 kOe, which indicates the basic antiferromagnetic property and a paramagnetic state [18,19]. Here, the residual entropy confirms the existence of a glass-type phase [18,24].…”

“…Compared with the lattice contribution, the calculated values of C 0 and C 1 are small, which suggests an insulating property for the doped sample. In the inset of figure 6(b), the total entropy S of the sample is determined by integrating C P (T)/T from 1.8 K to 16 K. The sample has a much lower S value than an ideal Ising sample with Cr 3+ (S mag = 4Rln4 = 46.07).Here, the residual entropy confirms the existence of a glass-type phase[18,24].Then, we characterized the dielectric constant (ε r ) and dielectric loss (tanδ) of LiInCr 4−x Co x O 8 compounds in the temperature range of 323 − 573 K at eight different frequencies. Figure7shows the relative dielectric…”