TY - JOUR
T1 - Commensurate to incommensurate magnetic phase transition in honeycomb-lattice pyrovanadate Mn2 V2 O7
AU - Sannigrahi, J.
AU - Adroja, D. T.
AU - Perry, R.
AU - Gutmann, M. J.
AU - Petricek, V.
AU - Khalyavin, D.
N1 - Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/11/18
Y1 - 2019/11/18
N2 - We have synthesized a single-crystalline sample of Mn2V2O7 using the floating zone technique, and we investigated the ground state using magnetic susceptibility, heat capacity, and neutron diffraction. Our magnetic susceptibility and heat capacity reveal two successive magnetic transitions at TN1=17K and TN2=11.8K indicating two distinct magnetically ordered phases. The single-crystal neutron diffraction study shows that in the temperature (T) range 11.8≤T≤17K the magnetic structure is commensurate with propagation vector k1=(0,0.5,0), while upon lowering temperature below TN2=11.8K an incommensurate magnetic order emerges with k2=(0.38,0.48,0.5) and the magnetic structure can be represented by cycloidal modulation of the Mn spin in the ac plane. We discuss the role of magnetic exchange interactions and spin-orbital coupling on the stability of the observed magnetic phase transitions.
AB - We have synthesized a single-crystalline sample of Mn2V2O7 using the floating zone technique, and we investigated the ground state using magnetic susceptibility, heat capacity, and neutron diffraction. Our magnetic susceptibility and heat capacity reveal two successive magnetic transitions at TN1=17K and TN2=11.8K indicating two distinct magnetically ordered phases. The single-crystal neutron diffraction study shows that in the temperature (T) range 11.8≤T≤17K the magnetic structure is commensurate with propagation vector k1=(0,0.5,0), while upon lowering temperature below TN2=11.8K an incommensurate magnetic order emerges with k2=(0.38,0.48,0.5) and the magnetic structure can be represented by cycloidal modulation of the Mn spin in the ac plane. We discuss the role of magnetic exchange interactions and spin-orbital coupling on the stability of the observed magnetic phase transitions.
UR - http://www.scopus.com/inward/record.url?scp=85075269218&partnerID=8YFLogxK
U2 - 10.1103/PhysRevMaterials.3.113401
DO - 10.1103/PhysRevMaterials.3.113401
M3 - Article
AN - SCOPUS:85075269218
SN - 2475-9953
VL - 3
JO - Physical Review Materials
JF - Physical Review Materials
IS - 11
M1 - 113401
ER -