Ferromagnetic Ordering in Superatomic Solids

详细信息    查看全文

• 作者：Chul-Ho Lee ; Lian Liu ; Christopher Bejger ; Ari Turkiewicz ; Tatsuo Goko ; Carlos J. Arguello ; Benjamin A. Frandsen ; Sky C. Cheung ; Teresa Medina ; Timothy J. S. Munsie ; Robert D鈥橭rtenzio ; Graeme M. Luke ; Tiglet Besara ; Roger A. Lalancette ; Theo Siegrist ; Peter W. Stephens ; Andrew C. Crowther ; Louis E. Brus ; Yutaka Matsuo ; Eiichi Nakamura ; Yasutomo J. Uemura ; Philip Kim ; Colin Nuckolls ; Michael L. Steigerwald ; Xavier Roy
• 刊名：Journal of the American Chemical Society
• 出版年：2014
• 出版时间：December 3, 2014
• 年：2014
• 卷：136
• 期：48
• 页码：16926-16931
• 全文大小：355K
• ISSN：1520-5126

文摘

In order to realize significant benefits from the assembly of solid-state materials from molecular cluster superatomic building blocks, several criteria must be met. Reproducible syntheses must reliably produce macroscopic amounts of pure material; the cluster-assembled solids must show properties that are more than simply averages of those of the constituent subunits; and rational changes to the chemical structures of the subunits must result in predictable changes in the collective properties of the solid. In this report we show that we can meet these requirements. Using a combination of magnetometry and muon spin relaxation measurements, we demonstrate that crystallographically defined superatomic solids assembled from molecular nickel telluride clusters and fullerenes undergo a ferromagnetic phase transition at low temperatures. Moreover, we show that when we modify the constituent superatoms, the cooperative magnetic properties change in predictable ways.