Room-temperature ferromagnetism in Cr-doped GaN single crystals

2002 ◽  
Vol 80 (22) ◽  
pp. 4187-4189 ◽  
Author(s):  
Sang Eon Park ◽  
Hyeon-Jun Lee ◽  
Yong Chan Cho ◽  
Se-Young Jeong ◽  
Chae Ryong Cho ◽  
...  
Keyword(s):  
Single Crystals ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism

scholarly journals Room temperature ferromagnetism in D–D neutron irradiated rutile TiO2 single crystals

RSC Advances ◽  
2020 ◽  
Vol 10 (32) ◽  
pp. 18687-18693
Author(s):  
Huan Liu ◽  
Gongping Li ◽  
Dejun E ◽  
Nannan Xu ◽  
Qiaolu Lin ◽  
...  
Keyword(s):  
Single Crystals ◽  
Neutron Irradiation ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Rutile Tio2 ◽  
Theoretical Results

D–D neutron irradiation is used to regulate the concentration and type of defect in rutile TiO2. Room temperature ferromagnetism was observed after irraidiation. Combining experimental and theoretical results, we elucidate the likely origins of RTFM.

Effect of Ar ion irradiation on the room temperature ferromagnetism of undoped and Cu-doped rutile TiO 2 single crystals

2016 ◽  
Vol 25 (11) ◽  
pp. 116103 ◽  
Author(s):  
Nan-Nan Xu ◽  
Gong-Ping Li ◽  
Qiao-Lu Lin ◽  
Huan Liu ◽  
Liang-Man Bao
Keyword(s):  
Single Crystals ◽  
Room Temperature ◽  
Ion Irradiation ◽  
Room Temperature Ferromagnetism

Room-temperature ferromagnetism in chalcopyrite Mn-doped ZnSnAs2 single crystals

2002 ◽  
Vol 122 (3-4) ◽  
pp. 165-167 ◽  
Author(s):  
S. Choi ◽  
G.-B. Cha ◽  
S.C. Hong ◽  
S. Cho ◽  
Y. Kim ◽  
...  
Keyword(s):  
Single Crystals ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Mn Doped

Room Temperature Ferromagnetism in D-D Neutron Irradiated ZnO Single Crystals

2020 ◽  
Vol 33 (5) ◽  
pp. 1535-1542
Author(s):  
H. Liu ◽  
G. P. Li ◽  
D. J. E ◽  
N. N. Xu ◽  
Q. L. Lin ◽  
...  
Keyword(s):  
Single Crystals ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism

Defect types and room temperature ferromagnetism in N-doped rutile TiO 2 single crystals

2014 ◽  
Vol 23 (6) ◽  
pp. 067502 ◽  
Author(s):  
Xiu-Bo Qin ◽  
Dong-Xiang Li ◽  
Rui-Qin Li ◽  
Peng Zhang ◽  
Yu-Xiao Li ◽  
...  
Keyword(s):  
Single Crystals ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism

Room-temperature ferromagnetism observed in C-/N-/O-implanted MgO single crystals

2013 ◽  
Vol 556 ◽  
pp. 237-241 ◽  
Author(s):  
Qiang Li ◽  
Bonian Ye ◽  
Yingping Hao ◽  
Jiandang Liu ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Single Crystals ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism

Dislocation structures around SiO2 Particles in aged Cu-Cr-SiO2

1978 ◽  
Vol 36 (1) ◽  
pp. 594-595
Author(s):  
N.J. Long ◽  
M.H. Loretto ◽  
C.H. Lloyd
Keyword(s):  
Flow Stress ◽  
Single Crystals ◽  
Room Temperature ◽  
Thin Foil ◽  
Age Hardening ◽  
Dispersion Strengthening ◽  
Accurate Picture ◽  
The Matrix ◽  
Very High ◽  
Good Agreement

IntroductionThere have been several t.e.m. studies (1,2,3,4) of the dislocation arrangements in the matrix and around the particles in dispersion strengthened single crystals deformed in single slip. Good agreement has been obtained in general between the observed structures and the various theories for the flow stress and work hardening of this class of alloy. There has been though some difficulty in obtaining an accurate picture of these arrangements in the case when the obstacles are large (of the order of several 1000's Å). This is due to both the physical loss of dislocations from the thin foil in its preparation and to rearrangement of the structure on unloading and standing at room temperature under the influence of the very high localised stresses in the vicinity of the particles (2,3).This contribution presents part of a study of the Cu-Cr-SiO2 system where age hardening from the Cu-Cr and dispersion strengthening from Cu-Sio2 is combined.

Bright field and weak-beam images of dislocations gliding on (001) planes in F.C.C. metals

1978 ◽  
Vol 36 (1) ◽  
pp. 352-353
Author(s):  
H. P. Karnthaler ◽  
A. Korner
Keyword(s):  
Single Crystals ◽  
Dislocation Structure ◽  
Room Temperature ◽  
Stage Ii ◽  
Bright Field ◽  
Weak Beam ◽  
Standard Orientation

In f.c.c. metals slip is observed to occur generally on {111} planes. Glide dislocations on intersecting {111} planes can react with each other and form Lomer-Cottrell locks which lie along a <110> direction and are sessile since they are split on two {111} planes. Cottrell already pointed out that these dislocations could glide on {001} planes if they were not split. The first study of this phenomenon has been published recently. It is the purpose of this paper to report some interesting new details of the dislocations gliding on {001} planes in pure Ni, Cu, and Ag deformed at room temperature.Single crystals are grown with standard orientation and strained into stage II. The crystals are sliced parallel to the (001) planes. The dislocation structure is studied by TEM and the Burgers vectors ḇ and glide planes of the dislocations are determined unambiguously.In Fig.l primary P and secondary S dislocations react and form composite dislocations K.

Effect of trytophan as dopant on potassium acid phthalate single crystals

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Single Crystals ◽  
Room Temperature ◽  
Visible Region ◽  
X Ray Diffraction ◽  
X Ray ◽  
Slow Evaporation Technique ◽  
Absorption Studies ◽  
Evaporation Technique ◽  
Potassium Acid Phthalate ◽  
Acid Phthalate

Optically transparent single crystals of potassium acid phthalate (KAP, 0.5 g) 0.05 g and 0.1 g (1 and 2 mol %) trytophan were grown in aqueous solution by slow evaporation technique at room temperature. Single crystal X- ray diffraction analysis confirmed the changes in the lattice parameters of the doped crystals. The presence of functional groups in the crystal lattice has been determined qualitatively by FTIR analysis. Optical absorption studies revealed that the doped crystals possess very low absorption in the entire visible region. The dielectric constant has been studied as a function of frequency for the doped crystals. The thermal stability was evaluated by TG-DSC analysis.

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