Muon spin relaxation investigation of magnetic ordering in the hybrid organic-inorganic perovskites [(CH3)2NH2]M(HCOO)3, M = Ni,Co,Mn,Cu

Autor:	Baker, P. J., Lancaster, T., Franke, I., Hayes, W., Blundell, S. J., Pratt, F. L., Jain, P., Wang, Z. -M., Kurmoo, M.
Rok vydání:	2010
Předmět:	Condensed Matter - Strongly Correlated Electrons
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.82.012407
Popis:	Muon spin relaxation measurements are reported on samples of dimethylammonium metal formates containing magnetic divalent nickel, cobalt, manganese, and copper ions. These hybrid organic-inorganic perovskites exhibit weak ferromagnetism and are, apart from the copper system, multiferroics with well separated magnetic and antiferroelectric transitions. We use muons to follow the sublattice magnetization, observing the effect of the spin reorientation transitions below TN and the criticality approaching TN. The multiferroic samples have three-dimensional antiferromagnetic interactions, but the copper sample shows quasi-one-dimensional behavior due to its Jahn-Teller distorted structure, with a ratio of its inter- and intrachain exchange constants j/J=0.037. Comment: 4 pages, accepted for publication in Physical Review B
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1007.1096 Zobrazit plný text záznamu View this record from Arxiv