Table 2 The unit-cell parameters of Cr at ambient T as a function of P.

From: Characterization of the high-pressure and high-temperature phase diagram and equation of state of chromium

a\(_W\) (Å)	P\(_W\) (GPa)	a\(_{Cr}\) (Å)	V\(_{Cr}\) (Å\(^3\))	a\(_W\) (Å)	P\(_W\) (GPa)	a\(_{Cr}\) (Å)	V\(_{Cr}\)(Å\(^3\))	a\(_W\) (Å)	P\(_W\) (GPa)	a\(_{Cr}\) (Å)	V\(_{Cr}\) (Å\(^3\))
3.167	0.00	2.886	24.03	3.042	45.97	2.730	20.34	2.926	114.75	2.612	17.82
3.165	0.40	2.884	24.00	3.039	47.09	2.726	20.27	2.925	116.00	2.610	17.78
3.165	0.32	2.884	23.99	3.036	48.86	2.723	20.18	2.923	116.89	2.609	17.75
3.165	0.38	2.884	23.99	3.032	50.50	2.719	20.10	2.922	118.11	2.608	17.73
3.165	0.38	2.884	23.98	3.028	52.65	2.714	19.99	2.920	119.22	2.606	17.70
3.165	0.47	2.884	23.98	3.024	54.44	2.711	19.92	2.920	119.73	2.605	17.68
3.165	0.51	2.884	23.98	3.021	56.35	2.707	19.85	2.918	120.94	2.603	17.64
3.164	0.65	2.884	23.98	3.019	57.48	2.704	19.77	2.917	121.94	2.602	17.62
3.164	0.66	2.884	23.98	3.014	59.77	2.700	19.68	2.915	123.36	2.601	17.59
3.163	0.94	2.883	23.96	3.011	61.66	2.697	19.62	2.914	124.25	2.600	17.57
3.161	1.38	2.880	23.89	3.008	62.95	2.695	19.57	2.912	125.21	2.598	17.53
3.149	5.18	2.862	23.44	3.007	63.55	2.693	19.54	2.911	126.29	2.597	17.51
3.125	12.71	2.832	22.72	3.003	65.60	2.688	19.41	2.909	127.49	2.595	17.48
3.117	15.34	2.822	22.48	3.002	66.34	2.686	19.37	2.909	128.17	2.594	17.46
3.107	18.86	2.809	22.16	3.000	67.19	2.684	19.34	2.907	129.07	2.593	17.43
3.106	19.49	2.806	22.10	2.995	69.94	2.680	19.26	2.906	130.34	2.592	17.41
3.103	20.32	2.803	22.03	2.995	70.08	2.679	19.23	2.905	131.39	2.590	17.38
3.097	22.63	2.797	21.88	2.994	70.61	2.678	19.20
3.094	23.80	2.794	21.81	2.990	72.92	2.675	19.14
3.091	24.87	2.791	21.75	2.988	74.05	2.673	19.09
3.090	25.51	2.789	21.70	2.986	75.29	2.671	19.05
3.089	25.62	2.787	21.66	2.985	76.12	2.669	19.02
3.089	25.82	2.786	21.62	2.983	77.09	2.668	18.98
3.087	26.57	2.785	21.59	2.980	78.74	2.665	18.94
3.087	26.60	2.783	21.56	2.979	79.40	2.664	18.91
3.085	27.15	2.782	21.54	2.969	85.41	2.654	18.70
3.085	27.10	2.781	21.51	2.969	85.67	2.654	18.69
3.084	27.68	2.780	21.49	2.969	85.70	2.654	18.69
3.083	28.24	2.779	21.46	2.969	85.92	2.653	18.68
3.082	28.48	2.777	21.42	2.968	86.09	2.653	18.68
3.082	28.46	2.777	21.42	2.968	86.40	2.653	18.67
3.081	29.03	2.775	21.36	2.967	87.07	2.651	18.64
3.077	30.64	2.772	21.30	2.965	88.41	2.649	18.59
3.077	30.54	2.771	21.29	2.961	90.68	2.647	18.54
3.077	30.48	2.771	21.28	2.960	91.68	2.645	18.51
3.077	30.69	2.771	21.27	2.957	93.60	2.643	18.45
3.075	31.22	2.770	21.26	2.953	96.04	2.640	18.40
3.075	31.15	2.770	21.25	2.951	97.09	2.638	18.36
3.075	31.43	2.769	21.24	2.949	98.36	2.636	18.31
3.074	31.68	2.769	21.22	2.948	99.39	2.634	18.27
3.074	31.54	2.768	21.21	2.946	100.6	2.632	18.23
3.075	31.40	2.768	21.20	2.944	102.37	2.629	18.18
3.073	32.17	2.767	21.17	2.942	103.79	2.627	18.14
3.072	32.74	2.765	21.14	2.940	104.66	2.626	18.11
3.070	33.48	2.763	21.09	2.940	105.22	2.625	18.09
3.068	34.46	2.760	21.02	2.936	107.49	2.622	18.03
3.064	35.95	2.755	20.91	2.935	108.64	2.620	17.99
3.060	37.59	2.751	20.83	2.932	110.45	2.617	17.92
3.055	40.06	2.745	20.69	2.931	111.50	2.616	17.91
3.050	42.00	2.740	20.57	2.929	112.58	2.615	17.88
3.045	44.40	2.734	20.45	2.927	113.87	2.613	17.84

All values are obtained using He as pressure transmitting medium. The lattice parameters of W, used for the P⁶⁷ measurements, are also reported. The experimental uncertainty of the lattice parameters is lower than 0.003 Å. The uncertainty on pressure measurement increases from 0.06 GPa at ambient P to 0.27 GPa at 200 GPa.

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Table 2 The unit-cell parameters of Cr at ambient T as a function of P.

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