Squaring-up of modulated magnetic structures in HoAg and TmAg

Abstract
The temperature variation of the amplitude modulated magnetic structures of HoAg and TmAg has been investigated by neutron diffraction on single crystals. A beginning of squaring-up has been observed, but due to experimental conditions the expected antiphase regime could not be fully reached. No locking of the incommensurate propagation vector into commensurate values has been evidenced within the experimental accuracy and no lattice modulation through the magnetoelastic coupling has been detected

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