Mn–Mn couplings in Mn-doped CdS nanocrystals studied by magnetic circular dichroism spectroscopy

Taguchi, Seiji; Ishizumi, Atsushi; Tayagaki, Takeshi; Kanemitsu, Yoshihiko
April 2009
Applied Physics Letters;4/27/2009, Vol. 94 Issue 17, p173101
Academic Journal
We report on the optical and magnetic properties of Mn-doped CdS nanocrystals coated with a ZnS shell layer (CdS:Mn/ZnS core-shell nanocrystals) by magnetic circular dichroism (MCD) spectroscopy. The magnetic field and temperature dependences of the MCD spectrum show paramagnetic behavior of the CdS:Mn/ZnS core-shell nanocrystals. The MCD intensity increases with the Mn concentration up to a few mol %, and then starts to decrease rapidly. This Mn-concentration dependence of the MCD intensity can be explained by the formation of Mn–Mn pairs in heavily doped nanocrystals.


Related Articles

  • Synthesis and Modelling of Precipitation and Growth of MCD and NCD/UNCD Films from C2 Radicals. Tarala, V. A.; Sinelnikov, B. M.; Shevchenko, M. Yu.; Titarenko, A. A.; Shevchenko, E. F. // International Journal of Pure & Applied Sciences & Technology;2013, Vol. 19 Issue 1, p1 

    The paper is concerned with modelling and simulation of film nucleation and growth in the case of diamond-like deposition of materials on a (100) surface. Semi-empirical methods of computational quantum chemistry are used to estimate potential energies of carbon clusters, on whose basis possible...

  • Element-specific magnetometry of EuS nanocrystals. Selinsky, Rachel S.; Keavney, David J.; Bierman, Matthew J.; Jin, Song // Applied Physics Letters;11/16/2009, Vol. 95 Issue 20, p202501 

    A soft x-ray absorption and x-ray magnetic circular dichroism (XMCD) study of the ferromagnetism in solution-grown EuS nanocrystals (NCs) is reported. The absorption edges of Eu M5 and M4, S K, O K, and P K were probed to determine elementally specific contributions to the magnetism of EuS NCs....

  • Phase evolution of magnetite nanocrystals on oxide supports via template-free bismuth ferrite precursor approach. Cheung, Jeffrey; Bogle, Kashinath; Cheng, Xuan; Sullaphen, Jivika; Kuo, Chang-Yang; Chen, Ying-Jiun; Lin, Hong-Ji; Chen, Chien-Te; Yang, Jan-Chi; Chu, Ying-Hao; Valanoor, Nagarajan // Journal of Applied Physics;Nov2012, Vol. 112 Issue 10, p104321 

    This report investigates the phase evolution pathway of magnetite nanocrystal synthesis on oxide-supported substrates. A template-free phase separation approach, which exploits the thermodynamic instability of ternary perovskite BiFeO3 and inherent volatility of bismuth oxide in low oxygen...

  • The external heavy atom effect: Theory of spin–orbit coupling of alkali and noble metals in rare gas matrices. Pellow, Robert; Vala, Martin // Journal of Chemical Physics;5/15/1989, Vol. 90 Issue 10, p5612 

    Recent data from magnetic circular dichroism (MCD) and optical absorption studies of alkali and noble metal atoms in rare gas matrices have shown an interesting and significant influence of the rare gas on the spin–orbit (SO) splitting of the metal excited 2P state. The excited state SO...

  • Dielectric tensor formulation of magnetic dichroism sum rules. Zhao, Dai; Hochst, Hartmut; Huber, David L. // Journal of Applied Physics;9/1/1998, Vol. 84 Issue 5, p2858 

    Describes the formalism used to interpret the magnetic circular dichroism sum rules in terms of the complex dielectric tensor. Utilization of the Maxwell-Fresnel theory; Application of the formalism applied to the reflection spectra of iron; Consequences of the energy dependence of the...

  • Erratum: Magnetic circular dichroism of Na3Eu(ODA)3·2NaClO4·6H2O [J. Chem. Phys. 100, 815 (1994)]. Görller-Walrand, C.; Verhoeven, P.; D’Olieslager, J.; Fluyt, L.; Binnemans, K. // Journal of Chemical Physics;10/15/1994, Vol. 101 Issue 8, p7189 

    Presents a correction on an article about magnetic circular dichroism.

  • A direct two-dimensional comparison of magnetic circular dichroism and magnetic linear dichroism in ultraviolet photoemission spectroscopy. Gao, Xingyu; Koveshnikov, Alexey N.; Madjoe, Reginaldt H.; Subramanian, Krishnan; Mankey, Gary J.; Stockbauer, Roger L.; Kurtz, Richard L. // Journal of Applied Physics;5/15/2002 Part 1, 2 & 3, Vol. 91 Issue 10, p7364 

    The angular dependence of magnetic dichroism in photoemission (MDAD) from valence bands is more complicated than that from core levels. It gives access to spin-resolved information about the bands involved in the photoexcitation process. By using a unique ellipsoidal-mirror analyzer, we are able...

  • Quadrupolar and dipolar contributions to x-ray magnetic circular dichroism at the Tb L[sub 3,2] edges: Experiment versus theory. Wende, H.; Li, Z.; Scherz, A.; Ceballos, G.; Baberschke, K.; Ankudinov, A.; Rehr, J. J.; Wilhelm, F.; Rogalev, A.; Schlagel, D. L.; Lograsso, T. A. // Journal of Applied Physics;5/15/2002 Part 1, 2 & 3, Vol. 91 Issue 10, p7361 

    We investigate the x-ray magnetic circular dichroism (XMCD) at the L[sub 3,2] edges using a single crystal of Tb as a prototype system for a one-element magnet in order to ascertain the multipolar nature of the features in the dichroic spectra. The high resolution of the experimental data allows...

  • Polarimeter for soft x rays (abstract). Kachel, T.; Holldack, K. // Journal of Applied Physics;4/17/1997, Vol. 81 Issue 8, p5090 

    Presents an abstract of the paper `Polarimeter for Soft X Rays,' presented by T. Kachel, K. Holidack, et al, at the American Institute of Physics' 1997 Conference on Magnetism and Magnetic Materials. Polarimeter developed for measurement of the polarization of magnetic circular dichroism (MCD)...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics