Superspin glass phase and hierarchy of interactions in multiferroic PbFe1/2Sb1/2O3: an analog of ferroelectric relaxors?

• Published in: New journal of physics Vol. 16; no. 11; pp. 113041 - 113059
• Main Authors: Laguta, V V, Stephanovich, V A, Savinov, M, Marysko, M, Kuzian, R O, Kondakova, I V, Olekhnovich, N M, Pushkarev, A V, Radyush, Yu V, Raevski, I P, Raevskaya, S I, Prosandeev, S A
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 20.11.2014
• Subjects: 75.20.-g; 75.40.Gb; 75.50.Lk; Antiferromagnetism; Ferroelectric materials; ferroelectric relaxors; Ferroelectricity; Fields (mathematics); High temperature; Magnetic induction; Magnetic properties; Magnetic relaxation; Morphology; Multiferroic materials; multiferroics; Organic chemistry; Perovskites; Phase diagrams; Physics; Relaxors; Spin glasses; superspin glass; Temperature

We have fabricated new perovskite multiferroic PbFe Sb O3 with a high degree (up to 0.9) of chemical ordering and unexpectedly high-temperature magnetic relaxor properties, which can barely be described within concepts of conventional spin glass physics. Notably, we found that the field-temperature...