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Evolution of magnetic order in multiferroic Pb(Fe 2/3 W 1/3 )O 3 ‐BiFeO 3 solid solution
Author(s) -
Li Haijuan,
Zhuang Jian,
Bokov Alexei A.,
Zhang Nan,
Zhang Jie,
Ren Wei,
Ye ZuoGuang
Publication year - 2021
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17854
Subject(s) - multiferroics , superexchange , phase diagram , solid solution , spintronics , condensed matter physics , materials science , ferromagnetism , phase (matter) , physics , ferroelectricity , quantum mechanics , dielectric , metallurgy , optoelectronics
Abstract Multiferroic materials have attracted much interest in the last decade due to both the intriguing fundamental science and the potential applications in spintronics and magnetoelectric data storage devices. In this work, we have investigated and discussed the evolution of the magnetic properties of the multiferroic (1‐ x )Pb(Fe 2/3 W 1/3 )O 3 ‐ x BiFeO 3 solid solution ((1‐ x )PFW‐ x BFO, x = 0, 0.025, 0.05, 0.075, 0.1 and 0.15). The magnetic phase diagram is established based on the magnetic measurement results, which reveals six magnetically ordered states on the PFW‐rich side of the solid solution. The origins of the complex evolution of magnetic order in the PFW‐BFO solid solution are discussed from the point view of the variations in both the –Fe–O–Fe– and –Fe–O–W–O–Fe– superexchange routes, which are intimately related to the ratio of magnetic Fe 3+ ion concentration on the B‐site and the changes in the local structural order/disorder and chemical homogeneities. Combining the magnetic phase diagram with the relaxor characteristic phase diagram of the (1‐ x )PFW‐ x BFO system, a striking feature is found that the ergodic relaxor (ER) state and the weakly ferromagnetic phase coexist in the composition range of 0.025 ≤ x ≤ 0.1 between the freezing temperature T f and the Burns temperature T B .