TY - JOUR

T1 - Magnetovolume effects and the (formula presented)-(formula presented) magnetic phase diagram of (formula presented)

AU - Honda, Fuminori

AU - Sechovský, Vladimir

AU - Oomi, Gendo

AU - Andreev, Alexander V.

AU - Menovsky, Alois A.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - The thermal expansion of single-crystalline (formula presented) along the a and c axes has been measured with high accuracy. The linear thermal expansion is found to be highly anisotropic and to show a spontaneous magnetostriction. In the ground state, the spontaneous volume magnetostriction reaches (formula presented) The lattice volume changes abruptly at (formula presented) and (formula presented) where (formula presented) undergoes the magnetic phase transitions. When increasing temperature, a considerable volume expansion (formula presented) at (formula presented) and tiny shrinkage (by (formula presented) at (formula presented) have been observed. On the other hand, no apparent volume effect is observed around the magnetic ordering temperature (formula presented) Thermal expansion data are analyzed using thermodynamic relations in order to elucidate the previously published pressure dependences of temperatures of magnetic phase transitions (formula presented) (formula presented) and (formula presented).

AB - The thermal expansion of single-crystalline (formula presented) along the a and c axes has been measured with high accuracy. The linear thermal expansion is found to be highly anisotropic and to show a spontaneous magnetostriction. In the ground state, the spontaneous volume magnetostriction reaches (formula presented) The lattice volume changes abruptly at (formula presented) and (formula presented) where (formula presented) undergoes the magnetic phase transitions. When increasing temperature, a considerable volume expansion (formula presented) at (formula presented) and tiny shrinkage (by (formula presented) at (formula presented) have been observed. On the other hand, no apparent volume effect is observed around the magnetic ordering temperature (formula presented) Thermal expansion data are analyzed using thermodynamic relations in order to elucidate the previously published pressure dependences of temperatures of magnetic phase transitions (formula presented) (formula presented) and (formula presented).

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U2 - 10.1103/PhysRevB.64.184417

DO - 10.1103/PhysRevB.64.184417

M3 - Article

AN - SCOPUS:85038939449

VL - 64

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

SN - 0163-1829

IS - 18

ER -