Anomalous remnant magnetization in dilute antiferromagnetic Gd1-xYxB4

Author(s)

Masunaga, S. H. ^[1] ; Barbeta, V. B. ^[1] ; Jardim, R. F. ^[2] ; Becerra, C. C. ^[2] ; Torikachvili, M. S. ^[3] ; Rosa, P. F. S. ^[4] ; Fisk, Z. ^[4]

Affiliation

^[1] Ctr Univ FEI, Dept Fis, Ave Humberto AC Branco 3972, BR-09850901 Sao Bernardo Do Campo, SP - Brazil

^[2] Univ Sao Paulo, Inst Fis, Rua Matao 1371, BR-05508090 Sao Paulo - Brazil

^[3] San Diego State Univ, Dept Phys, San Diego, CA 92182 - USA

^[4] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 - USA

• Document type: Journal article
• Source: PHYSICAL REVIEW MATERIALS; v. 2, n. 8 AUG 31 2018.
• Web of Science Citations: 0

Abstract

Magnetic properties of dilute single crystals of Gd1-xYxB4 (x = 0, 0.2, and 0.4) were systematically studied. These antiferromagnetic Shastry-Sutherland compounds display a remnant magnetization M-R when field cooled below the Neel temperature T-N. The magnitude of M-R at low magnetic fields is magnetic field dependent, increasing with increasing magnetic fields, and it saturates for H <= 30 Oe. The M-R(T) data for both x = 0.2 and 0.4 compositions overlap, and the remnant magnetization follows a universal behavior. We argue that these findings are explained by taking into account the formation of magnetic domains within the crystals, originating from the dilution of a magnetically frustrated, antiferromagnetic sublattice. (AU)

• FAPESP's process: 14/19245-6 - Search for novel superconducting materials
• Grantee: Renato de Figueiredo Jardim
• Support type: Scholarships abroad - Research
• FAPESP's process: 13/20181-0 - Evolution of topological Kondo insulating behavior in Sm1xRxB6 (r = Sr, Yb)
• Grantee: Priscila Ferrari Silveira Rosa
• Support type: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC