Films of Mn12-acetate deposited by low-energy laser ablation
J. Means (1), V. Meenakshi (1), R.V.A. Srivastava (1), W. Teizer (1),, Al.A. Kolomenskii (1), H.A. Schuessler (1), H. Zhao (2), K.R. Dunbar, (2)((1)Department of Physics, Texas A&M University, (2)Department of, Chemistry, Texas A&M University)
TL;DR
This study demonstrates that low-energy laser ablation can deposit Mn12-acetate thin films that retain their core structure and magnetic properties, with an observed new magnetic phase at 27 K.
Contribution
It introduces a novel low-energy laser ablation method for depositing intact Mn12-acetate films with preserved magnetic characteristics.
Findings
Films retain molecular structure and magnetic properties.
Magnetization peak at 27 K indicates new magnetic phase.
Method enables thin film fabrication of molecular magnets.
Abstract
Thin films of the molecular magnet Mn12-acetate, [Mn12 O12(CH3COO)16 (H2O)4] 2CH3COOH 4H2O, have been prepared using a laser ablation technique with a nitrogen laser at low laser energies of 0.8 and 2 mJ. Chemical and magnetic characterizations show that the Mn12-acetate cores remain intact and the films show similar magnetic properties to those of the parent molecular starting material. In addition, the magnetic data exhibit a peak in the magnetization at 27 K indicating the creation of an additional magnetic phase not noted in previous studies of crystalline phases.
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