全文获取类型
收费全文 | 55篇 |
免费 | 0篇 |
专业分类
化学 | 35篇 |
晶体学 | 1篇 |
物理学 | 19篇 |
出版年
2013年 | 1篇 |
2005年 | 1篇 |
2004年 | 2篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1992年 | 1篇 |
1990年 | 3篇 |
1984年 | 1篇 |
1982年 | 3篇 |
1981年 | 2篇 |
1978年 | 2篇 |
1976年 | 1篇 |
1975年 | 1篇 |
1900年 | 2篇 |
1896年 | 1篇 |
1891年 | 1篇 |
1890年 | 2篇 |
1887年 | 3篇 |
1886年 | 1篇 |
1884年 | 2篇 |
1882年 | 2篇 |
1879年 | 1篇 |
1872年 | 5篇 |
1870年 | 1篇 |
1869年 | 1篇 |
1867年 | 1篇 |
1866年 | 2篇 |
1865年 | 1篇 |
1863年 | 4篇 |
1862年 | 1篇 |
排序方式: 共有55条查询结果,搜索用时 0 毫秒
1.
2.
The electron spin resonance of MoO3?4 in YVO4 was studied at 4.2K. The Mo5+ has a dxy ground state and is shown to move off the V5+ substitutional site of D2d symmetry to one of four crystallographically equivalent off-center sites of C2 symmetry, located in the 〈110〉 direction. The Mo5+ spectrum is compared to Cr5+ in YVO4 and YPO4 and V4+ in ZrSiO4 and other zircon-like crystals which show dynamic effects that we interpret as tunneling or thermally activated hopping between off-center sites. 相似文献
3.
I. Yaeger A.H. Morrish C. Boumford C.P. Wong B.M. Wanklyn B.J. Garrard 《Solid State Communications》1978,28(8):651-653
Fe57 Mössbauer spectra of FeNb2O6 were obtained from 15.0K down to 1.9 K. The isomer shift, 1.42±0.01 mm sec?1 relative to Cr, was found to be temperature independent, whereas the magnitude of the quadrupole splitting was observed to decrease slightly with temperature. The quadrupole splitting and the hyperfine field at 1.9 K are -2.41±0.01 mm sec?1 and 34.6±0.3 kOe respectively. The directions of the hyperfine fields experienced by the Fe nuclei are in the a-c plane symmetrically displaced with respect to the crystallographic axes. 相似文献
4.
Ohne Zusammenfassung 相似文献
5.
6.
J. A. Wanklyn 《Fresenius' Journal of Analytical Chemistry》1872,11(1):446
Ohne Zusammenfassung 相似文献
7.
Thudichum und Wanklyn 《Fresenius' Journal of Analytical Chemistry》1870,9(1):270-271
Ohne Zusammenfassung 相似文献
8.
Tomás Moya-Pizarro Roger Salmon Léopold Fournes Gilles Le Flem Barbara Wanklyn Paul Hagenmuller 《Journal of solid state chemistry》1984,53(3):387-397
Single crystals of the high-temperature form of NaFeP2O7 have been grown by a flux technique. II-NaFeP2O7 crystallizes in the monoclinic space group with lattice parameters: a = 7.298(2) Å, b = 7.874(2) Å, c = 9.536(3) Å, β = 111.85(2)°. The structure refined from 1481 independent reflections leads to R = 0.044 and confirms the work previously published by M. Gabelica-Robert, M. Goreaud, P. Labbe, and B. Raveau (J. Solid State Chem.45, 389, 1982). Magnetic Mössbauer resonance studies have shown the existence of antiferromagnetic ordering with a weak ferromagnetic component below 30 K. The FeO bond is markedly ionic in character due to the highly polarizing power of phosphorus in tetrahedral site. 相似文献
9.
Alain Tressaud Jean Louis Soubeyroux Jean Michel Dance René Sabatier Paul Hagenmuller Barbara M. Wanklyn 《Solid State Communications》1981,37(6):479-484
The nature of the magnetic interactions in the chain compound Rb2FeF5 has been investigated using neutron diffraction and magnetic measurements under high applied fields. Rb2FeF5 orders antiferromagnetically at TN = 8.0 ± 0.5 K; the magnetic structure is of the AZ + GX mode and the moment of the Fe3+ ion extrapoled to 0K is 3.5 ± 0.2 μB, this low value being due to zero-point spin reduction. Within a chain the Fe3+ ions are antiferromagnetically coupled with an exchange constant of J/k = ?8.8 K. A spin-flop behavior has been observed and interpreted on the basis of the molecular field theory. The critical field was found to be HC = 65 kOe at 1.7 K. 相似文献
10.