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Unexpected Property: Increase in the Magnetic Interactions of Cd 1– y Mn y S Nano‐Sized Particles with Decreasing Particle Size
Author(s) -
Feltin Nicola,
Levy Laurent,
Ingert Dorothée,
Pileni MariePaule
Publication year - 1999
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(199903)11:5<398::aid-adma398>3.0.co;2-2
Subject(s) - quantum dot , materials science , particle size , ion , particle (ecology) , nanotechnology , band gap , chemical physics , magnesium , nano , condensed matter physics , chemical engineering , quantum mechanics , optoelectronics , physics , composite material , oceanography , geology , engineering , metallurgy
The relationship between particle size and bandgap energy in magnesium‐containing quantum dots is reported here for the first time. A reverse micellar process was used in the synthesis of the Cd 1– y Mn y S quantum dots, a procedure whereby the size and composition of the quantum dots can be independently controlled. This allowed detailed investigation of the magnetic interactions between Mn 2+ ions and the electron bands of CdS, and between Mn 2+ ions themselves, and of how these interactions vary with the size and composition of the Cd 1– y Mn y S quantum dots.