C. R. dela Cruz | Researchain

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Featured researches published by C. R. dela Cruz.

Physical Review B | 2008

Magnetic order of the iron spins in NdFeAsO

Ying Chen; J. W. Lynn; J. Li; G. Li; Gang Chen; J. L. Luo; N. L. Wang; Pengcheng Dai; C. R. dela Cruz; H. A. Mook

Polarized and unpolarized neutron-diffraction measurements have been carried out to investigate the iron magnetic order in undoped NdFeAsO. Antiferromagnetic order is observed below [4](6) K, which is in close proximity to the structural distortion observed in this material. The magnetic structure consists of chains of parallel spins that are arranged antiparallel between chains, which is the same in-plane spin arrangement as observed in all the other iron oxypnictide materials. Nearest-neighbor spins along the c axis are antiparallel like LaFeAsO. The ordered moment is 0.25(7) mu(B), which is the smallest moment found so far in these systems.

Physical Review B | 2006

Structural anomalies at the magnetic and ferroelectric transitions in RMn 2 O 5 (R=Tb,Dy,Ho)

C. R. dela Cruz; F. Yen; Bernd Lorenz; M. Gospodinov; C. W. Chu; William Ratcliff; J. W. Lynn; S. Park; S.-W. Cheong

Strong anomalies of the thermal expansion coefficients at the magnetic and ferroelectric transitions have been detected in multiferroic

Physical Review B | 2007

Pressure-induced enhancement of ferroelectricity in multiferroic R Mn 2 O 5 ( R = Tb , Dy , Ho )

C. R. dela Cruz; Bernd Lorenz; Y. Y. Sun; Y. Q. Wang; S. Park; S.-W. Cheong; M. Gospodinov; C. W. Chu

RMn_2O_5

Physical Review B | 2005

Low-temperature dielectric anomalies in HoMn O3 : The complex phase diagram

F. Yen; C. R. dela Cruz; Bernd Lorenz; Y. Y. Sun; Y. Q. Wang; M. Gospodinov; C. W. Chu

. Their correlation with anomalies of the specific heat and the dielectric constant is discussed. The results provide evidence for the magnetic origin of the ferroelectricity mediated by strong spin-lattice coupling in the compounds. Neutron scattering data for

Physical Review B | 2007

Pressure-temperature phase diagram of multiferroic Ni 3 V 2 O 8

R. P. Chaudhury; F. Yen; C. R. dela Cruz; Bernd Lorenz; Y. Q. Wang; Y. Y. Sun; C. W. Chu

HoMn_2O_5

Journal of Applied Physics | 2006

Evidence for strong spin-lattice coupling in multiferroic RMn2O5(R=Tb,Dy,Ho) via thermal expansion anomalies

C. R. dela Cruz; F. Yen; Bernd Lorenz; Soonyong Park; Sang-Wook Cheong; M. Gospodinov; William Ratcliff; J. W. Lynn; C. W. Chu

indicate a spin reorientation at the two low-temperature phase transitions.

Physical Review B | 2017

Ba 8 CoNb 6 O 24 : A spin- 1 2 triangular-lattice Heisenberg antiferromagnet in the two-dimensional limit

Ryan Rawl; Luwei Ge; H. Agrawal; Y. Kamiya; C. R. dela Cruz; Nicholas P. Butch; X. F. Sun; Minseong Lee; Eun Sang Choi; J. Oitmaa; C. D. Batista; Martin Mourigal; H. D. Zhou; J. Ma

Measurements of ferroelectric polarization and dielectric constant were done on

Physical Review B | 2014

Coexistence of ferromagnetism and superconductivity in CeO 0.3 F 0.7 BiS 2

Jooseop Lee; Satoshi Demura; M. B. Stone; Kazuki Iida; Georg Ehlers; C. R. dela Cruz; Masaaki Matsuda; Keita Deguchi; Yoshihiko Takano; Yoshikazu Mizuguchi; Osuke Miura; Despina Louca; Sulgi Lee

Physical Review B | 2016