Autor: Witowski, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Spin-Lattice Relaxation of CdMnTe, Measured with a Pick-up Coil in a High Magnetic Field
Autorzy:: Strutz, T.
Witowski, A.
Wyder, P.
Powiązania:: https://bibliotekanauki.pl/articles/1927546.pdf
Data publikacji:: 1991-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 76.30.-v
78.20.Ls
78.47.+p
Opis:: The spin-lattice relaxation (SLR) time of Cd$\text{}_{1-x}$Mn$\text{}_{x}$Te with x=0.008 is measured directly under electron spin resonance condition in a magnetic field of 8.9 T, using a pick-up coil. The SLR times are measured for different sample temperatures between 3.0K and 35K and compared with data of a more diluted sample with x=0.002. The SLR times are shorter than expected for single spin SLR. Moreover, the temperature dependence of the SLR time does not show any of the characteristic behaviours for single spin SLR. Thus, the observed SLR times are explained by cross relaxation of single spins with spin clusters.
Źródło:: Acta Physica Polonica A; 1991, 79, 1; 149-153
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: The Relaxation of Mn Pairs in CdMnTe at High Magnetic Fields
Autorzy:: Strutz, T.
Witowski, A. M.
Wyder, P.
Powiązania:: https://bibliotekanauki.pl/articles/1890763.pdf
Data publikacji:: 1991-09
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 76.30.-v
78.20.Ls
78.47.+p
Opis:: The spin-lattice relaxation in CdMnTe at 4.7 K has been measured at high magnetic fields up to 24.5 T. At fields, where the ground state of nearest-neighbor exchange coupled Mn pairs changes due to energy level crossing, an increase in the relaxation rate is observed. This is attributed to the change of relaxation of nearest-neighbor Mn pairs. It proves that not only large size Mn clusters are involved in the relaxation as it has been shown previously, but also Mn pairs. It shows as well that the mixing of pair states is quite effective.
Źródło:: Acta Physica Polonica A; 1991, 80, 3; 313-316
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Orientation Dependent Spin-Lattice Relaxation in CdMnSe
Autorzy:: Witowski, A. M.
Strutz, T.
Wyder, P.
Powiązania:: https://bibliotekanauki.pl/articles/1877057.pdf
Data publikacji:: 1995-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 76.30.Fc
63.20.Dj
Opis:: The magnetization dynamics of Cd$\text{}_{1-x}$Mn$\text{}_{x}$Se at 4.5 K as a function of magnetic field up to 22 T was measured using a nonresonant technique. For x = 0.01 the relaxation does not depend on orientation and in higher fields the relaxation rates are proportional to B$\text{}^{3}$. For x = 0.02 a dependence on orientation is observed. The difference does not depend on magnetic field. This suggests that either the interaction between Mn ions responsible for spin-lattice relaxation in Mn clusters is anisotropic, or the relaxing clusters are oriented in a given manner with respect to the c axis.
Źródło:: Acta Physica Polonica A; 1995, 87, 2; 536-538
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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