scholarly journals Conduction-band states and the 5d-4f laser transition of rare-earth ion dopants

1997 ◽  
Author(s):  
Stephen A. Payne ◽  
Christopher D. Marshall ◽  
Andy J. Bayramian ◽  
Janice K. Lawson
Keyword(s):  
Rare Earth ◽  
Conduction Band ◽  
Rare Earth Ion ◽  
Laser Transition

scholarly journals Structure, Luminescence, and Magnetic Properties of Crystalline Manganese Tungstate Doped with Rare Earth Ion

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3717
Author(s):  
Jae-Young Jung ◽  
Soung-Soo Yi ◽  
Dong-Hyun Hwang ◽  
Chang-Sik Son
Keyword(s):  
Magnetic Field ◽  
Rare Earth ◽  
Sintering Temperature ◽  
Luminescent Properties ◽  
Concentration Quenching ◽  
Rare Earth Ions ◽  
Precipitation Method ◽  
Rare Earth Ion ◽  
Co Precipitation ◽  
Quenching Phenomenon

The precursor prepared by co-precipitation method was sintered at various temperatures to synthesize crystalline manganese tungstate (MnWO4). Sintered MnWO4 showed the best crystallinity at a sintering temperature of 800 °C. Rare earth ion (Dysprosium; Dy3+) was added when preparing the precursor to enhance the magnetic and luminescent properties of crystalline MnWO4 based on these sintering temperature conditions. As the amount of rare earth ions was changed, the magnetic and luminescent characteristics were enhanced; however, after 0.1 mol.%, the luminescent characteristics decreased due to the concentration quenching phenomenon. In addition, a composite was prepared by mixing MnWO4 powder, with enhanced magnetism and luminescence properties due to the addition of dysprosium, with epoxy. To one of the two prepared composites a magnetic field was applied to induce alignment of the MnWO4 particles. Aligned particles showed stronger luminescence than the composite sample prepared with unsorted particles. As a result of this, it was suggested that it can be used as phosphor and a photosensitizer by utilizing the magnetic and luminescent properties of the synthesized MnWO4 powder with the addition of rare earth ions.

Photon echoes in an amplifying rare-earth ion-doped crystal

2006 ◽  
Author(s):  
V. Crozatier ◽  
G. Gorju ◽  
F. Bretenaker ◽  
J.-L. Le Gouet ◽  
I. Lorgere ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Ion ◽  
Photon Echoes

Rare-earth-ion-size control on magnetic irreversibility field in CuBa2RECu2O7−δ

2001 ◽  
Vol 357-360 ◽  
pp. 230-233 ◽  
Author(s):  
Yukiko Yasukawa ◽  
Takayuki Nakane ◽  
Maarit Karppinen ◽  
Hisao Yamauchi
Keyword(s):  
Rare Earth ◽  
Size Control ◽  
Irreversibility Field ◽  
Rare Earth Ion ◽  
Magnetic Irreversibility ◽  
Ion Size

Internal Friction Study of the Rare Earth Ion Substituted Fast Oxide-Ion Conductors (La1-ΧreΧ)2Mo2O9 (Re=Nd, Gd)

2012 ◽  
Vol 184 ◽  
pp. 110-115
Author(s):  
X.P. Wang ◽  
J. Hu ◽  
Zhong Zhuang ◽  
Tao Zhang ◽  
Qian Feng Fang
Keyword(s):  
Phase Transition ◽  
Rare Earth ◽  
Internal Friction ◽  
Diffusion Processes ◽  
Rare Earth Ion ◽  
Disorder Transition ◽  
Oxide Ion Conductors ◽  
Oxide Ion ◽  
The Rare Earth ◽  
Ion Conductors

The relaxation and phase transition behaviors of rare-earth ion substituted fast oxide-ion conductors (La1-xRex)2Mo2O9 (Re=Nd, Gd) were investigated by internal friction (IF) measurement in the temperature range 300 K - 950 K. Three different IF peaks (labeled as PL, PH, and PG, respectively) were observed in the rare-earth ion doped La2Mo2O9 samples. Peak PL corresponds to short diffusion processes of oxygen ions among different oxygen vacancy sites. Peak PH is associated with the static/dynamic disorder transition in oxygen ion distribution. Peak PG is a newly discovered peak embodying phase transition-like characteristics and is suggested to be related to order-disorder transition associated with the rearrangement of La/ Re sub-lattice.

Rare Earth Ion Implantation for Silicon Based Light Emission

2005 ◽  
Vol 108-109 ◽  
pp. 755-760 ◽  
Author(s):  
Wolfgang Skorupa ◽  
J.M. Sun ◽  
S. Prucnal ◽  
L. Rebohle ◽  
T. Gebel ◽  
...  
Keyword(s):  
Rare Earth ◽  
Ion Implantation ◽  
Indium Tin Oxide ◽  
Light Emission ◽  
Charge Trapping ◽  
Electrical Performance ◽  
Rare Earth Ion ◽  
Light Emitting ◽  
Silicon Based ◽  
Luminescent Centers

Using ion implantation different rare earth luminescent centers (Gd3+, Tb3+, Eu3+, Ce3+, Tm3+, Er3+) were formed in the silicon dioxide layer of a purpose-designed Metal Oxide Silicon (MOS) capacitor with advanced electrical performance, further called a MOS-light emitting device (MOSLED). Efficient electroluminescence was obtained for the wavelength range from UV to infrared with a transparent top electrode made of indium-tin oxide. Top values of the efficiency of 0.3 % corresponding to external quantum efficiencies distinctly above the percent range were reached. The electrical properties of these devices such as current-voltage and charge trapping characteristics, were also evaluated. Finally, application aspects to the field of biosensing will be shown.

Off-centering of rare-earth ion in (Ba,R)(Ti,Mg)O3(R= Gd, Dy)

2016 ◽  
Vol 55 (10S) ◽  
pp. 10TC08 ◽  
Author(s):  
Shoichi Takeda ◽  
Satoshi Yasuda ◽  
Chikako Moriyoshi ◽  
Yoshihiro Kuroiwa ◽  
Atsushi Honda ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Ion

scholarly journals Modification of low temperature magnetic interactions in Dy1−xEuxMnO3

RSC Advances ◽  
2018 ◽  
Vol 8 (24) ◽  
pp. 13537-13545 ◽  
Author(s):  
K. Yadagiri ◽  
R. Nithya ◽  
Shilpam Sharma ◽  
A. T. Satya
Keyword(s):  
Rare Earth ◽  
Low Temperature ◽  
Solid Solutions ◽  
Magnetic Interactions ◽  
Rare Earth Ion ◽  
Ceramic Method

Solid solutions of rare earth ion (Eu3+) substituted DyMnO3, Dy1−xEuxMnO3 (x = 0.0–1.0) have been synthesized by ceramic method.

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