Simultaneously improved transparency, photochromic contrast and Curie temperature via rare-earth ion modification in KNN-based ceramics

2021 ◽  
Author(s):  
Jinfeng Lin ◽  
Jiwei Zhai ◽  
Xiao Wu ◽  
Bo Shen ◽  
Huihua Ye ◽  
...  
Keyword(s):  
Rare Earth ◽  
Curie Temperature ◽  
Optical Transparency ◽  
Rare Earth Ion ◽  
Vacancy Defects ◽  
Donor Doping ◽  
Higher Temperature

Higher temperature sintering and donor doping caused a series of changes, such as vacancy defects, microstructure and relaxor-feature, which led to the simultaneous improvement of optical transparency, PC contrast and Tc of the KNNLB-RE ceramics.

scholarly journals Influence of inherent strain on the curie temperature of rare earth ion-doped bismuth vanadate

1998 ◽  
Vol 21 (6) ◽  
pp. 499-502
Author(s):  
K Sooryanarayana ◽  
T N Guru Row ◽  
R Somashekar ◽  
K B R Varma
Keyword(s):  
Rare Earth ◽  
Curie Temperature ◽  
Bismuth Vanadate ◽  
Rare Earth Ion ◽  
Inherent Strain

The Influence of A-Site Rare Earth Ion Size in Controlling the Curie Temperature of Ba1 −xRExTi1 −x/4O3

2012 ◽  
Vol 23 (4) ◽  
pp. 491-495 ◽  
Author(s):  
Colin L. Freeman ◽  
James A. Dawson ◽  
John H. Harding ◽  
Liu-Bin Ben ◽  
Derek C. Sinclair
Keyword(s):  
Rare Earth ◽  
Curie Temperature ◽  
Rare Earth Ion ◽  
Ion Size ◽  
A Site

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.

Microstructural and electrical changes in Ca 0.9 R 0.1 CeNbMoO 8 ( r = y, sm, nd, la) Ceramics induced by rare‐earth Ion doping

2021 ◽  
Author(s):  
Yafei Liu ◽  
Zhilong Fu ◽  
Xingyu Chen ◽  
Yaxin Wei ◽  
Bo Zhang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Ion ◽  
Ion Doping

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

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.

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