Commensurate to Incommensurate Transition in the Chiral Helimagnet CuB₂O₄

Thermal Conductivity and Magnetic Phase Diagram of CuB2O4

“…We have measured the temperature and magnetic field dependences of  c and  110 of found to be in correspondence with the phase boundaries obtained by various measurements. [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] Accordingly, it has been concluded that thermal conductivity 9 / 18 measurements are very effective for detecting magnetic phase boundaries. 14,19,27) neutron scattering, 24) nonlinear optical, 21) NMR, 25,26) SR, 22) and magnetization 28)…”

“…[13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] Accordingly, it has been concluded that thermal conductivity 9 / 18 measurements are very effective for detecting magnetic phase boundaries. 14,19,27) neutron scattering, 24) nonlinear optical, 21) NMR, 25,26) SR, 22) and magnetization 28)…”

“…In fact, the muon spin relaxation experiment has revealed that the muon spin relaxation rate decreases below T * . 18,22) This means that the Cu Figures 5(a) and 5(b) display magnetic phase diagrams in magnetic fields parallel to the ab-plane and along the c-axis, respectively, obtained from the ESR, 14,19,27) neutron scattering, 24) nonlinear optical, 21) NMR, 25,26) SR, 22) and magnetization 28) measurements. In the phase diagram in magnetic fields along the ab-plane, here, we call the IC phase at lower fields and at higher fields IC(I) and IC(II), respectively.…”

“…After all, it has been found that the points, where  110 changes markedly, are approximately on the phase boundaries obtained by various measurements. [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] Therefore, it is concluded that thermal conductivity measurements are very effective for detecting magnetic phase boundaries in CuB 2 O 4 also.…”

“…The magnetic properties in CuB 2 O 4 have been revealed by various studies. [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] That is, CuB 2 O 4 undergoes a transition from a paramagnetic phase (P phase) to a commensurate weak ferromagnetic one (C phase) of Cu A 2+ spins (Fig. 2 It has been suggested that a magnetic soliton lattice is formed along the c-axis around T * .…”