Jump to main content
Jump to site search


Negative magnetization, complex magnetic ordering and applications of Cr-doped Co2TiO4

Author affiliations

Abstract

Polycrystalline Co2Ti1−xCrxO4 (0 ≤ x ≤ 0.2) inverse spinel ceramics have been synthesized via a sol–gel technique. The dc magnetization measurement in the field-cooled mode shows that negative magnetization could be observed until x reaches 0.2. The exchange constants are calculated using the ferrimagnetic Curie–Weiss fitting and the mean-field theory. This reveals that the strength of the inter sublattice magnetic interaction presents a non-monotonic trend with the increase in Cr content and reaches the minimum at x = 0.1, giving rise to the highest compensation temperature in the x = 0.1 sample. The applicability of the x = 0.1 sample is investigated in light of two prominent magnetic effects: (i) the stable magnetic switching effect indicates the potential applications in magnetic switching and data storage and (ii) the coexistence of normal and inverse magnetocaloric effects suggests a potential application in a constant temperature bath at 54 K.

Graphical abstract: Negative magnetization, complex magnetic ordering and applications of Cr-doped Co2TiO4

Back to tab navigation

Supplementary files

Article information


Submitted
28 Nov 2019
Accepted
27 Feb 2020
First published
28 Feb 2020

Phys. Chem. Chem. Phys., 2020, Advance Article
Article type
Paper

Negative magnetization, complex magnetic ordering and applications of Cr-doped Co2TiO4

Q. S. Fu, X. H. Chen, C. Chakrabarti, C. L. Li, J. Zheng, P. J. Wang, H. X. Yin, Y. Qiu, B. Meng and S. L. Yuan, Phys. Chem. Chem. Phys., 2020, Advance Article , DOI: 10.1039/C9CP06444C

Social activity

Search articles by author

Spotlight

Advertisements