Zobrazeno 1 - 10
of 39
pro vyhledávání: '"G. X. Tessema"'
Autor:
G. X. Tessema
Publikováno v:
Microscopy and Microanalysis. 24:2340-2341
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6087bc94cdae4ed9d43b9db4a1715fe5
https://doi.org/10.1017/s1431927618012187
https://doi.org/10.1017/s1431927618012187
Autor:
F. W. Oliver, Dereje Seifu, C. I. Wynter, J. C. Walker, A. Aning, Mohindar S. Seehra, Laszlo Takacs, E. Hoffman, I. L. Siu, E. Hammond, Abebe Kebede, G. X. Tessema
Publikováno v:
Journal of Magnetism and Magnetic Materials. 212:178-182
Mechanical alloying of α-Fe2O3 with Mn2O3 is shown to produce FeMnO3, whose X-ray diffraction pattern fits the cubic structure (space group Ia3, lattice constant ≈9.40 A) identical to that of Mn2O3. Temperature variation of its magnetic susceptibi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dfa9937582efdf3ffdae37221f0b33b0
https://doi.org/10.1016/s0304-8853(99)00787-8
https://doi.org/10.1016/s0304-8853(99)00787-8
Publikováno v:
Physica C: Superconductivity. 328:53-59
We have measured the thermal conductivity κ of Bi2(SrCa)3(Cu1−xTx)2Oy (T=Ni,Co,Fe) whiskers containing up to 1.5% substitution for Cu. Increased substitution suppresses both Tc and the usual enhancement of κ seen below Tc in undoped samples. Addi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93390ff62ddd5b9b689e45963710af97
https://doi.org/10.1016/s0921-4534(99)00536-5
https://doi.org/10.1016/s0921-4534(99)00536-5
Autor:
C. W. Schneider, D. T. Verebelyi, J. M. Pond, He Li, M. V. Nevitt, M. J. Skove, G. X. Tessema, Y. K. Kuo
Publikováno v:
Physica C: Superconductivity. 319:1-11
We have grown single crystal whiskers of Bi 2 (SrCa) n +1 (Cu 1− x Co x ) n O 8− δ with 0 x R as a function of the temperature T . For x n =2 in the majority of the sample and n =3 in a small part. For both phases, the changes in T c and in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a20089aaab1bd64ea0e76574a9f4cf29
https://doi.org/10.1016/s0921-4534(99)00280-4
https://doi.org/10.1016/s0921-4534(99)00280-4
Publikováno v:
Physical Review B. 57:14576-14579
We have measured the effect of elastic strain $\ensuremath{\epsilon}$ on the threshold field ${E}_{T}$ for the motion of the higher-temperature charge density wave (CDW) in ${\mathrm{NbSe}}_{3}$. We find that ${E}_{T}$ exhibits a critical behavior, $
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91d4e9a77d7f51e9c5ebfaf2f501eb5c
https://doi.org/10.1103/physrevb.57.14576
https://doi.org/10.1103/physrevb.57.14576
Publikováno v:
Physical Review B. 56:6201-6206
We have measured the change in the resistive ${T}_{c}$ of ${\mathrm{Bi}}_{2}(\mathrm{SrCa}{)}_{2+n}({\mathrm{Cu}}_{1\ensuremath{-}x}{M}_{x}{)}_{1+n}{\mathrm{O}}_{y}$ whiskers due to substitution of $M$ = Ni (magnetic) or $M$ = Zn (nonmagnetic) for Cu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d0150128c0fbd5e685236c3603ff275
https://doi.org/10.1103/physrevb.56.6201
https://doi.org/10.1103/physrevb.56.6201
Publikováno v:
Physical Review B. 52:7915-7919
We have measured the stress-strain ({sigma}-{epsilon}) relations in {ital o}-TaS{sub 3} below the charge-density-wave (CDW) transition temperature. We find a large peak in {ital d}{epsilon}/{ital d}{sigma} at a critical stress {sigma}{sub {ital c}}{a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fe895e93b11274029cacca882db4d9b
https://doi.org/10.1103/physrevb.52.7915
https://doi.org/10.1103/physrevb.52.7915
Publikováno v:
Solid State Communications. 94:867-872
We have investigated the effect of elastic strain on the resistance and thermopower of NbSe3 for T < 40 K. Below a critical strain ec ≈ 0.5 % the piezoresistance DRR(0) = [R(e) − R(0)]R(0) and the piezothermopower DSS(0) = [S(e) − S(0)]S(0) inc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df3a62049ed75145f9cd5a66ba7b7ddd
https://doi.org/10.1016/0038-1098(95)00140-9
https://doi.org/10.1016/0038-1098(95)00140-9
Publikováno v:
Physical Review B. 48:13141-13144
We have studied the effect of uniaxial stress σ 11 along the a direction, up to 150 MPa, on the thermoelectric power S(σ 11 ,T) and electrical resistance R(σ 11 ,T) of (Bi,Pb) 2 Sr 2 Ca 2 Cu 3 O x single crystals from the transition temperature to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7acd93cc3a057f75ea660538352e336b
https://doi.org/10.1103/physrevb.48.13141
https://doi.org/10.1103/physrevb.48.13141
Autor:
Dean J. Miller, Xin-Fen Chen, M. Marone, M. V. Nevitt, B. W. Veal, Malcolm Skove, G. X. Tessema
Publikováno v:
Physical Review B. 48:1254-1257
We have measured the resistivity of (Bi,Pb${)}_{2}$${\mathrm{Sr}}_{2}$${\mathrm{Ca}}_{\mathit{n}\mathrm{\ensuremath{-}}1}$${\mathrm{Cu}}_{\mathit{n}}$${\mathrm{O}}_{\mathit{x}}$ single-crystal whiskers in the a and c directions. Our results indicate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6197a6160cd3d9966b6f98c6e1d15e4
https://doi.org/10.1103/physrevb.48.1254
https://doi.org/10.1103/physrevb.48.1254