TY - JOUR
T1 - Thermal equation of state of goethite (α-FeOOH)
AU - Suzuki, Akio
N1 - Funding Information:
This research was partially supported by the Ito Science Foundation and by the Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Scientific Research on Innovative Areas (no. 15H05828), and for Challenging Exploratory Research (nos. 25610153, 16K13901).
PY - 2017/4/3
Y1 - 2017/4/3
N2 - The pressure–volume–temperature (P–V–T) equation of state (EoS) of natural goethite (α-FeOOH) has been determined by an X-ray diffraction study using synchrotron radiation. Fitting the volume data to the third-order Birch–Murnaghan EoS yielded an isothermal bulk modulus, B0 of 85.9(15) GPa, and a pressure derivative of the bulk modulus, B′, of 12.6(8). The temperature derivative of the bulk modulus, (∂B/∂T)P, was –0.022(9) GPa K−1. The thermal expansion coefficient α0 was determined to be 4.0(5) × 10−5 K−1.
AB - The pressure–volume–temperature (P–V–T) equation of state (EoS) of natural goethite (α-FeOOH) has been determined by an X-ray diffraction study using synchrotron radiation. Fitting the volume data to the third-order Birch–Murnaghan EoS yielded an isothermal bulk modulus, B0 of 85.9(15) GPa, and a pressure derivative of the bulk modulus, B′, of 12.6(8). The temperature derivative of the bulk modulus, (∂B/∂T)P, was –0.022(9) GPa K−1. The thermal expansion coefficient α0 was determined to be 4.0(5) × 10−5 K−1.
KW - Iron oxyhydroxide
KW - X-ray diffraction
KW - equation of state
KW - goethite
KW - hydrous mineral
UR - http://www.scopus.com/inward/record.url?scp=85015608365&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85015608365&partnerID=8YFLogxK
U2 - 10.1080/08957959.2017.1301938
DO - 10.1080/08957959.2017.1301938
M3 - Article
AN - SCOPUS:85015608365
VL - 37
SP - 193
EP - 199
JO - High Pressure Research
JF - High Pressure Research
SN - 0895-7959
IS - 2
ER -