| Autor: |
H.C. Hamaker, C. F. Majkrzak, D. E. Cox, Z. Fisk, M. B. Maple, Herbert A. Mook, H. B. MacKay, Gen Shirane |
| Rok vydání: |
1982 |
| Předmět: |
|
| Zdroj: |
Physical Review B. 26:245-249 |
| ISSN: |
0163-1829 |
| DOI: |
10.1103/physrevb.26.245 |
| Popis: |
The results of neutron-diffraction measurements are reported which confirm the development of long-range magnetic order in superconducting Nd${\mathrm{Rh}}_{4}$${\mathrm{B}}_{4}$. Two distinct antiferromagnetic transitions occur below the superconducting phase-transition temperature ${T}_{\mathrm{SC}}=5.4$ K, one at ${T}_{\mathrm{MH}}\ensuremath{\simeq}1.5$ K and the other at ${T}_{\mathrm{ML}}\ensuremath{\simeq}1.0$ K. In both phases, the body-centered tetragonal sublattice of Nd atoms orders antiferromagnetically with the ${\mathrm{Nd}}^{3+}$ moments aligned along the unique $c$ axis. The magnetic moment is modulated sinusoidally along the [100] direction in the higher-temperature magnetic phase and along the [110] direction in the lower-temperature phase. The measured saturation moment is 3.4\ifmmode\pm\else\textpm\fi{} 0.5${\mathrm{\ensuremath{\mu}}}_{\mathit{B}}$. No ferromagnetic component could be detected in the higher-temperature magnetic phase within an experimental sensitivity of 0.3${\mathrm{\ensuremath{\mu}}}_{\mathit{B}}$. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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