Journal article
HoB4 at high pressure and low temperature: an experimental and theoretical study
In
High Pressure Research
—
2011, Volume 31, Issue 1, pp. 3-6
Abstract
Single crystals of HoB4 have been grown and used for synchrotron X-ray diffraction studies at pressures up to 23GPa and temperatures down to 100K. The experimental bulk modulus 195 ± 6GPa is in good agreement with 188.4 and 198.2GPa values calculated in the LSDA and LSDA+U approximations, indicating that mainly the boron sublattice determines the bulk modulus.
The experimental c/a ratio decreases slightly with pressure, but the effect is small. An orthorhombic distortion begins at Tc ≈ 295K, i.e. at a temperature much higher than the Neel temperature TN1=7.1K. The behavior is interpreted in terms of built-in strains and crystal mosaicity.
| Language: | English |
|---|---|
| Publisher: | Taylor & Francis |
| Year: | 2011 |
| Pages: | 3-6 |
| Journal subtitle: | An International Journal |
| ISSN: | 14772299 and 08957959 |
| Types: | Journal article |
| DOI: | 10.1080/08957959.2010.513683 |
Other keywords
crystal structure density functional theory equation of state
