-
6
-
-
0022252597
-
-
edited by, J. D. Chadi, W. A. Harrison, Springer, New York
-
(1985)
Proceedings of the 17th International Conference on the Physics of Semiconductors, San Francisco, 1984
, pp. 1419
-
-
Aggarwal, R.L.1
Jasperson, S.N.2
Shapira, Y.3
Foner, S.4
Skakibara, T.5
Goto, T.6
Miura, N.7
Dwight, K.8
Wold, A.9
-
17
-
-
84926588796
-
-
J. Spalłek, A. Lewicki, Z. Tarnawski, Z. Obuszko, and R. R. Galazka, (unpublished).
-
-
-
-
18
-
-
84926593622
-
-
In Ref. 8 deviations from S= case 5 over case 2 are reported for two Zn1-x _Mnx _Te samples. However, the high-temperature data for one of these samples (sample B in Fig. 6 of this reference) are actually fairly close to those expected when S= case 5 over case 2 and g=2. Only the data for sample A deviate from the expected behavior. The effective moment P which enters into the Curie constant is 2[S(S+1)]1/2 μB =5.9 μB , and not 5 μB as stated in Ref. 8.
-
-
-
-
28
-
-
0018434865
-
-
29, 5634, D. Heiman, Y. Shapira, S. Foner, B. Khazai, R. Kershaw, K. Dwight, A. Wold, Phys. Rev. B
-
(1979)
Solid State Commun.
, vol.29
, pp. 435
-
-
Gaj, J.A.1
Planel, R.2
Fishman, G.3
-
31
-
-
84926577217
-
-
Typically, T0 increases with x, but is still smaller than 4 K when x=0.1. Thus, for T<2 K and H=100 kOe the deviation of M from Ms is less than 5% for x=0.1, and is still smaller for lower x.
-
-
-
-
35
-
-
84926537959
-
-
Strictly, there is another contribution to the observed δ M which is not due to NN pairs. It arises from another type of cluster (with four spins which are all NN's of each other), for which the first few magnetization steps occur at the same fields as those for the pairs. However, it is expected that the probability for the occurrence of such quartets is very small for small x, so that they should have a negligible contribution to the observed magnitude of δ M.
-
-
-
-
37
-
-
84926531109
-
-
At very low temperatures, kB T<|J prime |, the steps due to NN pairs which have NNN's might be resolved from the steps due to NN pairs which have no NNN's.
-
-
-
-
42
-
-
84926535166
-
-
Northern Analytical Laboratory, Amherst, New Hampshire 03031.
-
-
-
-
46
-
-
0018434865
-
-
In some early works [see, e.g., ] the magnetization was fitted to Eq. (3) instead of Eq. (20). That is, the diamagnetic contribution of the lattice was neglected. For the present samples the differences between the values of Ms and T0 obtained from fits to Eqs. (3) and (20) are not significant. However, for very low x these two equations can lead to quite different values of Ms and T0 In our view, Eq. (20) is preferable because it gives the correct behavior in the limit x -> 0.
-
(1979)
Solid State Commun.
, vol.29
, pp. 435
-
-
Gaj, J.A.1
Planel, R.2
Fishman, G.3
-
47
-
-
84926593461
-
-
In addition to the results in Fig. 4, magnetization data for both samples were also obtained with the VSM at 4.2 K. Analysis of the 4.2-K data gave values for Ms which were about 3% higher than those obtained from Fig. 4. The values for T0 were about 0.2 K higher.
-
-
-
|
