Abstract
The magnetic neutron scattering from a single crystal of MnTiO3 has been studied. The static magnetic susceptibility has shown two dimensional character above TN. The sublattice magnetization, however, follows a power law with β= 0.32±0.01 as in a three dimensional antiferromagnet. A quasi elastic neutron scattering has been observed in the vicinity of the Néel temperature with anisotropic three dimensional correlations. When temperature increases, the scattering profile transforms gradually to a ridge-like form, indicating that the two dimensional correlations develope at about 16 K above TN. The values of critical exponents in the three dimensional critical region coincide with the theoretical values of the three dimensional Ising system.
| Original language | English |
|---|---|
| Pages (from-to) | 462-469 |
| Number of pages | 8 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 42 |
| Issue number | 2 |
| Publication status | Published - Feb 1977 |
| Externally published | Yes |
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Magnetic critical behavior of a quasi two-dimensional antiferromagnet MnTiO3 . / Akimitsu, Jun; Ishikawa, Yoshikazu.
In: Journal of the Physical Society of Japan, Vol. 42, No. 2, 02.1977, p. 462-469.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Magnetic critical behavior of a quasi two-dimensional antiferromagnet MnTiO3
AU - Akimitsu, Jun
AU - Ishikawa, Yoshikazu
PY - 1977/2
Y1 - 1977/2
N2 - The magnetic neutron scattering from a single crystal of MnTiO3 has been studied. The static magnetic susceptibility has shown two dimensional character above TN. The sublattice magnetization, however, follows a power law with β= 0.32±0.01 as in a three dimensional antiferromagnet. A quasi elastic neutron scattering has been observed in the vicinity of the Néel temperature with anisotropic three dimensional correlations. When temperature increases, the scattering profile transforms gradually to a ridge-like form, indicating that the two dimensional correlations develope at about 16 K above TN. The values of critical exponents in the three dimensional critical region coincide with the theoretical values of the three dimensional Ising system.
AB - The magnetic neutron scattering from a single crystal of MnTiO3 has been studied. The static magnetic susceptibility has shown two dimensional character above TN. The sublattice magnetization, however, follows a power law with β= 0.32±0.01 as in a three dimensional antiferromagnet. A quasi elastic neutron scattering has been observed in the vicinity of the Néel temperature with anisotropic three dimensional correlations. When temperature increases, the scattering profile transforms gradually to a ridge-like form, indicating that the two dimensional correlations develope at about 16 K above TN. The values of critical exponents in the three dimensional critical region coincide with the theoretical values of the three dimensional Ising system.
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UR - http://www.scopus.com/inward/citedby.url?scp=0040399920&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0040399920
VL - 42
SP - 462
EP - 469
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 2
ER -