Effects of alternation in some quasi‐one‐dimensional magnetic materials

Autor:	William E. Hatfield, Dimitri Kessissoglou, John D. Petersen, Vincent L. Pecoraro, Myoung Soo Lah, Martin L. Kirk, Larry W. Morgan
Rok vydání:	1991
Předmět:	Crystallography Magnetization chemistry Atomic orbital Ferromagnetism Inorganic chemistry General Physics and Astronomy chemistry.chemical_element Antiferromagnetism Bridging ligand Manganese Copper Ion
Zdroj:	Journal of Applied Physics. 69:6013-6015
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.347796
Popis:	Exchange coupling in Cu(II) and Mn(III) compounds with unusual structures is discussed. {[Cu(bipyrimidine)(OH)(H2O)] (ClO4)}n has an alternatingly bridged structure with alternating ferromagnetic (+167.6 cm−1 through the hydroxo bridge) and antiferromagnetic (−79.8 cm−1 through the bipyrimidine bridge) interactions. Copper(II) phthalate monohydrate has alternating next‐nearest‐neighbor exchange with J=−12.3 cm−1 and α=0.06. This is the first member of this class. The compound K2[Mn(III) (salicylate)2][Mn(III) (salicylate)2]{CH3OH]2 has manganese ions in two environments alternating along the chain. A modified model for the chain is presented, and exchange coupling is found to be small since magnetic orbitals are not linked by the bridging ligand.
Databáze:	OpenAIRE
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