Publication Date

8-1-2018

Department

Ames Laboratory; Physics and Astronomy

Campus Units

Physics and Astronomy, Ames Laboratory

OSTI ID+

1466351

Report Number

IS-J 9735

DOI

10.1021/acs.jpcc.8b04061

Journal Title

The Journal of Physical Chemistry C

Volume Number

122

Issue Number

33

First Page

19139

Last Page

19145

Abstract

In this Article, the temperature-dependent magnetic properties of CuAgSe pellet sintered from surfactant-free CuAgSe nanoparticles synthesized by a wet chemistry method were investigated in the temperature range of 4–300 K. A magnetic transition between diamagnetism and weak ferromagnetism is observed at around 60–70 K. The results from magnetic measurements under different machines/magnetic fields, room-temperature X-ray photoelectron spectroscopy, and temperature-dependent nuclear magnetic resonance all demonstrate that this magnetic transition is an intrinsic property rather than an effect of impurities. Combining these results with temperature-dependent neutron diffraction, the origin of the weak ferromagnetism is ascribed to a structural crossover-induced canted antiferromagnetism and possible deviation of Cu valence. The transition is strongly dependent on the sintering temperature and pressure, which could induce the structural phase transition.

Language

en

Publisher

Iowa State University Digital Repository, Ames IA (United States)

Available for download on Thursday, August 01, 2019

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